- Facile one-pot synthesis of 2-oxazoline
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We developed a facile one-pot synthesis of 2-oxazolines from carboxylic acid and 2-chloroethyl isocyanate, involving amide bond formation and a following intramolecular cyclization using 4-dimethylaminopyridine as the catalyst. A large variety of functional groups are well tolerated by the mild reaction conditions to afford diverse 2-oxazolines in good to excellent yields. This reaction will keep the chirality of the isocyanate at position 1, the R2 substituted carbon. Microwave-assisted synthesis can further enhance the reaction yield and reduce the reaction time to 5 min. This method facilities the synthesis of 2-oxazolines for diverse applications, such as 2-oxazoline derived polymers and materials.
- Jiang, Weinan,Liu, Runhui,Song, Gonghua,Zhou, Min,Zhou, Yang,Zhu, Jipeng
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supporting information
(2022/01/28)
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- Rhodium(III)-Catalyzed Oxidative Cyclization of Oxazolines with Cyclopropanols: Synthesis of Isoindolinones
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The synthesis of C3-substituted isoindolin-1-ones from oxazolines and cyclopropanols has been achieved with oxazoline as a bifunctional nucleophilic directing group. The reaction proceeds by the cleavage of three chemical bonds and allows the formation of three new chemical bonds, a C-N bond, a C-C bond, and a C-O bond, in a single step.
- Liu, Jidan,Yang, Zhenke,Jiang, Jinyuan,Zeng, Qiaohai,Zheng, Liyao,Liu, Zhao-Qing
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supporting information
p. 5927 - 5931
(2021/07/31)
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- Mild, Selective Ru-Catalyzed Deuteration Using D2O as a Deuterium Source
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A method for the selective deuteration of polyfunctional organic molecules using catalytic amounts of [RuCl2(PPh3)3] and D2O as a deuterium source is presented. Through variation of additives like CuI, KOH, and various amounts of zinc powder, orthogonal chemoselectivities in the deuteration process are observed. Mechanistic investigation indicates the presence of different, defined Ru-complexes under the given specific conditions.
- Eisele, Pascal,Ullwer, Franziska,Scholz, Sven,Plietker, Bernd
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supporting information
p. 16550 - 16554
(2019/12/11)
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- Cu(II) immobilized on Fe3O4@Agarose nanomagnetic catalyst functionalized with ethanolamine phosphate–salicylaldehyde schiff base: A magnetically reusable nanocatalyst for preparation of 2-substituted imidazolines, oxazolines, and thiazolines
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Herein we synthesized Cu(II) immobilized on Fe 3 O 4 @Agarose functionalized with ethanolamine phosphate–salicylaldehyde Schiff base (Fe 3 O 4 @Agarose/SAEPH 2 /Cu(II)) as a new and cost-effective nanomagnetic catalyst. The nanomagnetic catalyst was characterized by FT- IR, XRD, VSM, SEM- EDX, TEM, TGA, and ICP techniques and it was found that the particles were about 9–25 nm in size and spherical with entrapment of the Fe 3 O 4 particles in the hollow pore structure of the agarose. The prepared nanomagnetic catalyst showed excellent activity for preparation of 2-substituted imidazolines, oxazolines, and thiazolines. The catalyst is easy to prepare and exhibits higher catalytic activity than some commercially available copper sources. More importantly, this nanomagnetic catalyst can be easily recovered by using a permanent magnet and reused for at least seven cycles without significant deactivation.
- Zarei, Zeinab,Akhlaghinia, Batool
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p. 170 - 191
(2018/02/17)
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- A 2 - substituted oxazoline or 2 - substituted piperazine synthetic method (by machine translation)
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The invention discloses a method for synthesizing 2 - substituted oxazoline or 2 - substituted oxazine new method, by nitrile and amino ethanol or 3 - amino - 1 - propanol as raw material, in the absence of solvent, can be used for the recycling of the sulfur to induce synthesis of 2 - substituted oxazoline and 2 - substituted piperazine. The method of the invention has low cost, simple reaction process, mild reaction conditions, the reaction time is short, the yield and the like, is suitable for the industrial generation. (by machine translation)
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-
Paragraph 0021; 0033
(2017/08/25)
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- Highly efficient synthesis of β-nitrate ester carboxamides through the ring-opening of 2-oxazolines
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A novel method for the synthesis of β-nitrate ester carboxamides using non-corrosive tert-butyl nitrite (TBN) as the nitro source and easily available oxygen as the oxidant has been developed. Variously substituted 2-oxazolines were efficiently ring-opened to deliver the corresponding products in excellent yields. Notably, this reaction provides fast access to pharmaceuticals such as nicorandil.
- Qiao, Kai,Yuan, Xin,Wan, Li,Zheng, Ming-Wei,Zhang, Dong,Fan, Bing-Bing,Di, Zhe-Chen,Fang, Zheng,Guo, Kai
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supporting information
p. 5789 - 5793
(2017/12/26)
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- Microwave-Assisted Synthesis of 2-Aryl-2-oxazolines, 5,6-Dihydro-4H-1,3-oxazines, and 4,5,6,7-Tetrahydro-1,3-oxazepines
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The first general procedure for the synthesis of 5- to 7-membered cyclic iminoethers by microwave-assisted cyclization of ω-amido alcohols promoted by polyphosphoric acid (PPA) esters is presented. 2-Aryl-2-oxazolines and 5,6-dihydro-4H-1,3-oxazines were efficiently prepared using ethyl polyphosphate/CHCl3. Trimethylsilyl polyphosphate in solvent-free conditions allowed for the synthesis of hitherto-unreported 4,5,6,7-tetrahydro-1,3-oxazepines. The method involves good to excellent yields and short reaction times.The reaction mechanism and the role of PPA esters were investigated in a chiral substrate.
- Mollo, María C.,Orelli, Liliana R.
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p. 6116 - 6119
(2016/12/09)
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- Willgerodt–Kindler reaction-driven one pot solventless entry to 2-oxazolines
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We report an efficient and green protocol for the synthesis of 2-oxazolines by the reaction of aromatic nitriles with β-aminoalcohols using sulfur under solvent-free conditions. The reaction occurs via the Willgerodt-Kindler mechanism followed by transami
- Bansal, Shivani,Gupta, Poonam,Halve
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p. 971 - 974
(2016/07/06)
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- A Mild and Regioselective Route to Functionalized Quinazolines
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A Rh-catalyzed ortho-amidation cyclocondensation sequence gave a range of 4-aminoquinazolines in high yield. The method features a remarkably mild C(sp2)-H activation step and can be exploited to rapidly access compounds with established biological activity.
- Maiden, Tracy M. M.,Swanson, Stephen,Procopiou, Panayiotis A.,Harrity, Joseph P. A.
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p. 14342 - 14346
(2015/10/05)
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- An efficient one-pot synthesis of 2-oxazolines with molecular iodine under ultrasound irradiation
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A series of 2-oxazolines were prepared by the condensation of aldehydes with 2-aminoethanol in the presence of molecular iodine and potassium carbonate in t-BuOH at 35-40 °C under ultrasound irradiation. The easy work-up procedure and moderate to good yie
- Xiao, Nan,Wang, Sen Hao,Zhang, Ai Ying,Li, Hong Yang,Wang, Peng,Li, Wei,Chen, Bao Hua,Chen, Guo Feng,Li, Na
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p. 9731 - 9742
(2016/01/12)
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- Ruthenium(II) 8-quinolinolates: Synthesis, characterization, crystal structure and catalysis in the synthesis of 2-oxazolines
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Abstract New octahedral ruthenium(II) complexes (1-4) have been synthesized from the reaction of ruthenium(II) precursors [RuHCl(CO)(EPh3)3] (E = P or As) with the bidentate Schiff base ligands, 2-((2,6-dimethylphenylimino)methyl)quinolin-8-ol (L1) and 2-((2,6-diisopropylphenylimino)methyl)quinolin-8-ol (L2) in ethanol. These complexes have been characterized by elemental analyses, IR, UV-Vis, 1H, 13C and 31P NMR and ESI-Mass spectroscopy. The molecular structure of the complex [RuCl(CO)(PPh3)2(L2)] (2) was determined by single-crystal X-ray diffraction, which reveals a distorted octahedral geometry around ruthenium(II) ion. The catalytic activity of the new complexes was evaluated for the condensation of nitriles with ethanolamine under solvent free conditions. The processes were operative with aromatic and heteroaromatic nitriles and tolerated several substitutional groups. The studies on the effect of substitution over ligands, coligands, reaction time, temperature and catalyst loading were carried out in order to find the best catalyst in this series of complexes and favorable reaction conditions. A probable mechanism for the catalytic condensation of nitrile has also been proposed. The catalyst was recovered and recycled up to five times without significant loss of its activity.
- Anitha,Manikandan,Prakash,Pachiyappan,Viswanathamurthi,Malecki
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p. 266 - 273
(2015/06/22)
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- Ruthenium(II) 9,10-phenanthrenequinone thiosemicarbazone complexes: Synthesis, characterization, and catalytic activity towards the reduction as well as condensation of nitriles
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The ligands 9,10-phenanthrenequinone-N4-substituted thiosemicarbazones (HL1-3) and their ruthenium(II) complexes were synthesized and characterized by elemental and spectroscopic methods. The ligands are tridentate, monobasic chelating ligands with O, N, and S as the donor sites and are in the thiol form in all the complexes. Catalytic studies showed that all the complexes displayed good catalytic activity towards the reduction of nitriles and also the condensation of nitriles with 2-aminoalcohol under solvent-free conditions.
- Anitha, Panneerselvam,Viswanathamurthi, Periasamy,Kesavan, Devarayan,Butcher, Ray Jay
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p. 321 - 334
(2015/10/20)
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- Copper N-Heterocyclic Carbene Complexes As Active Catalysts for the Synthesis of 2-Substituted Oxazolines from Nitriles and Aminoalcohols
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The reaction between nitriles and aminoalcohols to access 2-substituted oxazolines was investigated. Using copper-NHC complexes, various nitriles were successfully converted into the corresponding oxazolines, under milder and less wasteful conditions than those of previously reported methods.
- Trose, Michael,Lazreg, Fa?ma,Lesieur, Mathieu,Cazin, Catherine S. J.
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p. 9910 - 9914
(2015/11/03)
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- Synthesis of 2-aryl/heteroaryloxazolines from nitriles under metaland catalyst-free conditions and evaluation of their antioxidant activities
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The synthesis of structurally diverse 2-aryl/heteroaryloxazolines from nitriles and aminoalcohols has been achieved under metal- and catalyst-free conditions in good to excellent yields. An array of functional groups are well-tolerated, thus, allowing the introduction of many important biologically active motifs such as azoles, ring-fused azoles, saturated heterocyclics, and amines in 2-aryloxazoline scaffolds. An evaluation of the antioxidant properties using the DPPH (diphenyl picryl hydrazyl) assay method shows the pyrrole-functionalized 2-aryloxazoline to be the best antioxidant among all the synthesized 2-aryl/heteroaryloxazolines.
- Garg, Parul,Chaudhary, Shweta,Milton, Marilyn D.
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p. 8668 - 8677
(2015/01/08)
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- S-Co(II) cascade catalysis: Cyclocondensation of aromatic nitriles with alkamine
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A solvent-free S/Co(NO3)2 cascade catalyzed cyclocondensation reaction of aromatic nitriles with 3-amino-1-propanol or 2-aminoethanol has been successfully developed under thermal and microwave conditions. By this two-component protocol, mono- and bis-oxazines and oxazolines were selectively synthesized both in good to excellent yields and short reaction times. This catalytic system exhibits excellent chemoselectivity, and can be reused at least seven times without significant loss of activity in subsequent reactions.
- Ge, Haixia,Liu, Ping,Li, Xiangnan,Sun, Wei,Li, Jianli,Yang, Bingqin,Shi, Zhen
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p. 6591 - 6597
(2013/07/26)
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- Highly practical synthesis of nitriles and heterocycles from alcohols under mild conditions by aerobic double dehydrogenative catalysis
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A mild, aerobic, catalytic process for obtaining nitriles directly from alcohols and aqueous ammonia is described. The reaction proceeds via a dehydrogenation cascade mediated by catalytic CuI, bpy, and TEMPO in the presence of O2. The substrate scope is broad including various functionalized aromatic and aliphatic alcohols. This protocol enabled the one-pot synthesis of various biaryl heterocycles directly from commercially available alcohols.
- Yin, Weiyu,Wang, Chengming,Huang, Yong
-
supporting information
p. 1850 - 1853
(2013/06/04)
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- DDQ-induced dehydrogenation of heterocycles for c-c double bond formation: Synthesis of 2-thiazoles and 2-oxazoles
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Strong as an Ox: 2-Thiazoles and 2-oxazoles are formed by oxidation of 2-thiazolines and 2-oxazolines without requiring substituents at the C4 and C5 positions. DDQ plays an important role as the oxidant in this transformation and metal is unnecessary. This general procedure shows good functional group tolerance and provides a wide variety of 2-thiazoles and 2-oxazoles in moderate to excellent yields.
- Li, Xiangnan,Li, Cheng,Yin, Bing,Li, Cong,Liu, Ping,Li, Jianli,Shi, Zhen
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supporting information
p. 1408 - 1411
(2013/07/26)
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- A general and efficient palladium-catalyzed carbonylative synthesis of 2-aryloxazolines and 2-aryloxazines from aryl bromides
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Oxazoline is OK! A general and efficient method for the synthesis of oxazolines has been developed (see scheme). This allowed the preparation of 27 five-membered-ring heterocycles and 11 six-membered-ring heterocycles in moderate to good yields. Copyright
- Wu, Xiao-Feng,Neumann, Helfried,Neumann, Stephan,Beller, Matthias
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p. 13619 - 13623
(2013/01/15)
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- Trichloroisocyanuric acid as an efficient homogeneous catalyst for the chemoselective synthesis of 2-substituted oxazolines, imidazolines and thiazolines under solvent-free condition
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Trichloroisocyanuric acid, as a commercially available and inexpensive catalyst, was used in a new, facile and efficient procedure for the synthesis of 2-oxazolines, 2-imidazolines and 2-thiazolines through the reaction of nitriles with 2-aminoethanol, ethylenediamine or 2-aminoethanethiol under solvent-free conditions.
- Hojati, Seyedeh Fatemeh,Nezhadhoseiny, Seyede Atefe
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p. 1181 - 1189,9
(2020/09/14)
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- A powerful palladium-catalyzed multicomponent process for the preparation of oxazolines and benzoxazoles
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Efficient and convenient three-component couplings of an aryl halide, isocyanide, and an amino alcohol under palladium catalysis provide a range of oxazolines and benzoxazoles in excellent yield.
- Boissarie, Patrick J.,Hamilton, Zoe E.,Lang, Stuart,Murphy, John A.,Suckling, Colin J.
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supporting information; experimental part
p. 6256 - 6259
(2012/01/06)
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- Poly(N-bromo-N-ethyl-benzene-1,3-disulfonamide), N,N,N′,N′- tetrabromobenzene-1, 3-disulfonamide as new efficient reagents for conversion of alcohols to THP ethers and aldehydes to oxazoline compounds
-
This paper is concerned with an easy preparation of THP ethers from primary, secondary and tertiary alcohols and oxazoline compounds from various aldehydes using poly(N-bromo-N-ethyl-benzene-1,3-disulfonamide), N,N,N′,N′-tetrabromobenzene-1,3-disulfonamide [TBBDA] as new and efficient reagents under ambient conditions without over-oxidation.
- Ghorbani-Vaghei,Akbari-Dadamahaleh,Amiri
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experimental part
p. 301 - 307
(2010/09/03)
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- An exploration of the metal oxide-assisted decomposition and rearrangement of VV-Acyl-1, 3-oxazolidin-2-ones leading to 2-Aryl-2-oxazolines [1]
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An exploration into the utility of the thermally-induced (metal oxide-mediated) CO2 extrusion and subsequent rearrangement of N-acyl-1, 3-oxazolidin-2-ones to form 2-aryl(alkyl)-2-oxazolines is described. The reaction is found to give moderate yields of t
- Deshpande, Ankur A.,Gossage, Robert A.,Jackson, Sarah M.,Quail, J. Wilson,Sadowy, Amber L.,Yadav, Paras N.
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scheme or table
p. 1046 - 1052
(2010/03/01)
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- Preparation of an improved sulfonated carbon-based solid acid as a novel, efficient, and reusable catalyst for chemoselective synthesis of 2-oxazolines and bis-oxazolines
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A highly sulfonated carbon as an efficient, recyclable, nontoxic, and green solid acid catalyst was readily synthesized by simultaneous sulfonation, dehydration, and carbonization of sucrose in sulfuric acid and was characterized by FT-IR, TG-DTG, XRD, and CHNS analysis, neutralization potentiometric titration, and SEM techniques. This new catalyst was used for preparation of 2-oxazolines and bis-oxazolines by reaction of β-aminoethanol with nitriles under reflux conditions. Sonication of this system enhanced the catalytic activity of the carbon-based solid acid and led to higher product yields and shorter reaction times. Another advantage of the system under ultrasonic irradiation is the ability to carry out large-scale reactions. In two cases, the catalyst was reused several times without loss of its activity.
- Mirkhani, Valiollah,Moghadam, Majid,Tangestaninejad, Shahram,Mohammadpoor-Baltork, Iraj,Mahdavi, Mohammad
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experimental part
p. 1489 - 1494
(2010/07/04)
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- Practical reduction of oxazolines to alcohols
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A two-step, one-pot procedure using methyl chloroformate and lithium borohydride was developed to transform 2-substituted-oxazolines into alcohols. This methodology is compatible with a wide range of substrates including heterocyclic, aromatic, and aliphatic functionalized 2-oxazolines. Best results are obtained with electron-rich and ortho substituted 2-aryl-oxazolines.
- Bernardi, Anna,Ouellet, Stéphane G.,Angelaud, Remy,O'Shea, Paul D.
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supporting information; experimental part
p. 6707 - 6708
(2009/04/07)
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- Efficient oxidative conversion of aldehydes to 2-substituted oxazolines and oxazines using (diacetoxyiodo)benzene
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An efficient synthesis of 2-substituted oxazolines from aldehydes and 2-amino alcohol using (diacetoxyiodo)benzene as an oxidant, is reported. (Diacetoxyiodo)benzene acts as a mild dehydrogenating agent to convert the initially formed oxazolidine from ald
- Karade, Nandkishor N.,Tiwari, Girdharilal B.,Gampawar, Sumit V.
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p. 1921 - 1924
(2008/03/27)
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- Synthesis of 2-oxazolines and 2-thiazolines using lanthanide amino alkoxide
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New 2-oxazolines and 2-thiazolines are prepared from phenacysulfonylacetic acid methyl ester using lanthanide amino alkoxide. Copyright Taylor & Francis Group, LLC.
- Padmavathi,Reddy, B. Chandra Obula,Thriveni,Mohan, A.V. Nagendra
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p. 3127 - 3142
(2008/02/13)
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- A convenient synthesis of oxazolines and imidazolines from aromatic aldehydes with pyridinium hydrobromide perbromide in water
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Various 2-oxazolines were prepared from aromatic aldehydes and 2-aminoethanol with pyridinium hydrobromide perbromide in water at room temperature. 2-Imidazolines were also obtained in good yields from aromatic aldehydes and ethylenediamine under the same reaction conditions. Georg Thieme Verlag Stuttgart.
- Sayama, Shinsei
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p. 1479 - 1484
(2007/10/03)
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- A novel and chemoselective synthesis of 2-aryloxazolines and bis-oxazolines catalyzed by Bi(III) salts
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Different arylnitriles react with β-aminoalcohols in the presence of catalytic amounts of Bi(III) salts such as Bi(TFA)3, Bi(OTf) 3 and BiOClO4·XH2O producing the corresponding 2-aryl-oxazolines in high yields. Selective synthesis of mono- and bis-oxazolines from dicyanobenzenes and selective conversion of arylnitriles to their 2-oxazolines in the presence of alkylnitriles can be considered as noteworthy advantages of this method. Georg Thieme Verlag Stuttgart.
- Mohammadpoor-Baltork, Iraj,Khosropour, Ahmad Reza,Hojati, Seyedeh Fatemeh
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p. 2747 - 2750
(2007/10/03)
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- Preparation and characterization of bicyclic amide acetals and monothioacetals
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We have prepared and characterized new examples of 5-substituted-1-aza-4,6- dioxabicyclo[3.3.0]octanes (bicyclic amide acetals) and examples of the new heterocyclic system, 5-substituted-1-aza-4-oxa-6-thiabicyclo[3.3.0]octanes (bicyclic amide monothioacetals). Detailed analysis of NMR coupling constants and X-ray structure determination for an example of each class of compound established the stereochemistry and conformation of these ring systems.
- Guthrie, J. Peter,Gallant, Roger T.,Jennings, Michael C.
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p. 268 - 278
(2007/10/03)
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- NOVEL METHODS FOR THE TREATMENT OF INFLAMMATORY DISEASES
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Methods of inhibiting the cytokine or biological activity of Macrophage Migration Inhibitory Factor (MIF) comprising contacting MIF with a compound of formula (I) are provided. The invention also relates to methods of treating diseases or conditions where MIF cytokine or biological activity is implicated comprising administration of compounds of formula (I), either alone or as a part of combination therapy. Novel compounds of formula (I) are also provided for.
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- A simple synthesis of 2-substituted oxazolines and oxazines
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β-Aminoalcohols react with carboxylic acids in the presence of a zeolite, Ersorb-4, resulting in the formation of oxazoline derivatives in good yields. Similarly, 3-aminopropanol and benzoic acid gave the corresponding 2-phenyloxazine.
- Cwik, Agnieszka,Hell, Zoltán,Hegedüs, Adrienn,Finta, Zoltán,Horváth, Zoltán
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p. 3985 - 3987
(2007/10/03)
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- Efficient Cyclodesulfurization of N-(2-Hydroxyethyl)-N′-Arylthioureas to Δ2-Oxazolines Using Superoxide Radical Anion
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Δ2-Oxazolines have been synthesized in good yields by the cyclodesulfurization of N-(2-hydroxyethyl)-N′-phenylthioureas with superoxide radical anion (O2-?) at room temperature in anhydrous acetonitrile.
- Kim, Yong Il,Kim, Yong Hae
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p. 1324 - 1326
(2007/10/03)
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- N-Nitroso Compounds. Part 1. Structure and Decomposition of N-Nitroso-2-arylimidazolines in Aqueous Acidic Media
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Kinetic measurements for the acid-catalysed decomposition of N-nitroso-2-arylimidazolines are reported.Reactions are first-order in both +>.Two products are formed; an oxazoline, which is the product of hydrolysis of the amidine moiety, and the parent imidazoline formed by denitrosation of the substrate.These products arise from two competing pathways both of which are acid catalysed.The solvent isotope effects for the denitrosation, and amidine hydrolysis, , are 3.1 and 3.5, respectively.The denitrosation pathway, but not amidine hydrolysis, is catalysed by nucleophilic anions, and a value of 1.7 for the Swain-Scott constant, s, is obtained.In the abscence of nucleophilic anions, amidine hydrolysis is preferred over denitrosation, being twice as large as at 25 deg C.Substituents in the 2-aryl ring affect the rate of decomposition giving Hammett ρ values of 0.7 for denitrosation and 1.0 for amidine hydrolysis, which reflect the proximity of the reacting centres to the substituents.Values of the activation parameters are ΔH*NO 74 kJ/mol, ΔH*A 74 kJ/mol, ΔS*NO -48 J/K*mol and ΔS*A -43 J/K*mol.The data are interpreted in terms of a fast equilibrium protonation of the substrate, followed by competitive attack at the protonated substrate, either of water or nucleophilic anions at the nitroso nitrogen atom, or of water at the amidine carbon atom.Protonation is required to activate the substrate, the substrate being recovered from neutral or alkaline solutions unchanged.The mechanism is discussed with reference to the analogous reactions of N-nitrosoamines and N-nitrosoamides.
- Iley, Jim,Norberto, Fatima,Rosa, Eduarda
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p. 1471 - 1476
(2007/10/02)
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- Synthesis of 2-Aryl- and 5-Alkyl-2-aryloxazoles from 2-Aryl-5-bromooxazoles
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2-Aryloxazoles, their 5-deuterio derivatives, and 5-alkyl-2-aryloxazoles are prepared in good yields from 2-aryl-5-bromooxazoles via halogen/metal exchange with butyllithium followed by treatment with water, methanol-O-d, or alkyl halides, respectively.
- Kashima, Choji,Arao, Hideki
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p. 873 - 874
(2007/10/02)
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- Reactions with Aziridines (Aziranes), 29. N-Acylated or N-Sulfonated Esters of 2-Aminoethylphosphonic Acid by Mean of Base Catalyzed Aminoethylation of Diesters of Phosphoric Acid with Activated Aziridines.
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The sodium salts 2 of diesters of phosphoric acid 1 are amidoethylated at phosphorus with N-acylaziridines 3 or N-sulfonylaziridines 13 under proper reaction conditions at room temperature.In this manner a broad variation of N-acylated or N-sulfonated esters of 2-aminoethylphosphonic acids (5a-u, 15a-i) are obtained, mostly in good yields. 2-Methylated 2-aminoethylphosphonic esters are formed selectively in two cases by reaction of 2-methylated activated aziridines.
- Stamm, Helmut,Gerster, Gerhard,Baumann, Thomas
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p. 2936 - 2957
(2007/10/02)
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- Oxazolines. 3. Regioselective Synthesis of 2-(Monosubstituted phenyl) and/or Unsymmetrically 2-(Disubstituted phenyl) 2-Oxazolines by Cross-Coupling Grignard Reagents to (Haloaryl)-2-oxazolines
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2-(Monosubstituted phenyl) 2-oxazoline 5 (R = H) and unsymmetrically 2-(disubstituted phenyl) 2-oxazolines 5 have been prepared by cross-coupling alkyl and aryl Grignard reagents to 2-(mono- and dihalogenated phenyl) 2-oxazolines 2 and 3 (X = halogen), re
- Pridgen, Lendon N.
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p. 4319 - 4323
(2007/10/02)
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