- Cross-linked poly(N-vinylpyrrolidone)-titanium tetrachloride complex: A novel stable solid TiCl4 equivalent as a recyclable polymeric Lewis acid catalyst for regioselective ring-opening alcoholysis of epoxides
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Cross-linked poly(N-vinylpyrrolidone) resin beads were prepared as macromolecular ligand precursors by suspension copolymerization of N-vinyl-2-pyrrolidone and N,N′-methylenebisacrylamide (MBA) as a crosslinking agent in water. Subsequently, the resulting polymer carrier precursor was readily combined with titanium tetrachloride to form a stable polymeric coordination complex (PNVP/TiCl4), and this novel stable TiCl4 equivalent evaluated as a heterogeneous and reusable solid Lewis acid catalyst for the regio-and stereoselective nucleophilic ring opening of various epoxides with various alcohols to prepare β-alkoxy alcohols in excellent yields without generating any waste. The MBA-cross-linked PNVP and resultant catalyst were characterized by Fourier transform infrared spectroscopy (FT–IR), field-emission scanning electron microscope (FE–SEM), energy dispersive X-ray (EDX), inductively coupled plasma (ICP), and thermogravimetric analysis (TGA) techniques. Moreover, the catalyst is very stable, easily separated, and reused at least five times without significant loss of activity. In terms of scope, yields, the amount of catalyst used, and reaction time, the PNVP-TiCl4 complex catalyst is an improvement over previously reported heterogeneous catalysts for ring opening of epoxides methods. Further, the experimental outcome revealed that using the copolymer beads as carriers with a high percentage of crosslinking and the high mesh size leads had an adverse effect on the reaction rate.
- Rahmatpour, Ali,Sajjadinezhad, Seyed Mehrzad
-
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- MBA-cross-linked poly(N-vinyl-2-pyrrolidone)/ferric chloride macromolecular coordination complex as a novel and recyclable Lewis acid catalyst: Synthesis, characterization, and performance toward for regioselective ring-opening alcoholysis of epoxides
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A novel macromolecular-metal coordination complex, MBA-cross-linked PNVP/FeCl3 material was fabricated by immobilization of water intolerant ferric chloride onto the porous cross-linked poly(N-vinyl-2-pyrrolidone) carrier beads as a macromolecular ligand or carrier which was prepared by suspension free-radical copolymerization of N-vinyl-2-pyrrolidone (NVP) and N,N′-methylene bis-acrylamide (MBA) as a crosslinking agent in water. The obtained PNVP/FeCl3 was characterized by UV/vis and FT-IR spectroscopies, TGA, FE-SEM, EDX, and ICP techniques. This heterogenized version of ferric chloride is a convenient and safe alternative to highly water intolerant ferric chloride. The catalytic performance of (PNVP/FeCl3) as an efficient and recyclable polymeric Lewis acid catalyst was appropriately probed in the regio-and stereoselective nucleophilic ring opening of various epoxides with various alcohols in excellent yields with TOF up to 182.48 h?1 without generating any waste. The activity data indicate that this heterogeneous catalyst is very active and could be easily recovered, and reused at least six times without appreciable loss of activity indicating its stability under experimental conditions.
- Rahmatpour, Ali,Zamani, Maryam
-
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- Synthesis and structure of an air-stable bis(pentamethylcyclopentadienyl) zirconium pentafluorbezenesulfonate and its application in catalytic epoxide ring-opening reactions
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An air-stable mononuclear complex of bis(pentamethylcyclopentadienyl) zirconium pentafluorbezenesulfonate was successfully synthesized by treating C6F5SO3Ag with [(CH3)5Cp]2ZrCl2, which showed the cationic uninuclear structure of [{(CH3)5Cp}2Zr(CH3CN)2(H2O)][OSO2C6F5]2·CH3CN (1) confirmed by the X-ray analysis. Complex 1 was also characterized by other techniques and found to have the good nature of air-stability, water tolerance, thermally-stability and strong Lewis-acidity. Moreover, the complex showed high catalytic activity and recyclability in catalytic epoxide ring-opening reactions by amines or alcohols. This catalytic system affords a simple and efficient approach for synthesis of β-amino alcohols or β-alkoxy alcohols.
- Li, Ningbo,Wang, Lingxiao,Wang, Haojiang,Qiao, Jie,Zhao, Wenjie,Xu, Xinhua,Liang, Zhiwu
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p. 1033 - 1039
(2018/02/06)
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- Zirconium triflate grafted on SBA-15 as a highly efficient solid acid catalyst for ring opening of epoxides by amines and alcohols
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Metal (Al, Ti, Zr) triflate grafted mesoporous SBA-15 (AlTf/S, TiTf/S, ZrTf/S) samples were synthesized as inexpensive solid acid materials by a simple one-pot-two-step synthesis methodology. These materials were characterized by X-ray diffraction, N2-sorption, thermogravimetric analysis, Fourier transform infrared spectroscopy (FT-IR), in-situ pyridine FT-IR spectroscopy, and elemental analysis. ZrTf/S was found to be a highly efficient and reusable solid acid catalyst for ring opening of epoxides with amines and alcohols and produced β-amino alcohols and β-alkoxy alcohols respectively under ambient reaction conditions. The ZrTf/S catalyst showed the highest activity, which was attributed to its high acidity compared with that of the Ti and Al containing samples.
- Tayade, Kamlesh N.,Wang, Lianyue,Shang, Sensen,Dai, Wen,Mishra, Manish,Gao, Shuang
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p. 758 - 766
(2017/04/24)
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- A highly efficient protocol for regioselective ring-opening of epoxides with alcohols, water, acetic acid, and acetic anhydride catalyzed by SbF3
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SbF3as an efficient catalyst has been used for regioselective alcoholysis, acetolysis and hydrolysis of epoxides to the corresponding β-alkoxy, β-acetoxy alcohols, and 1,2-diols in high to excellent yields. This study also represents a convenient synthesis of vic-diacetates from ring-opening of epoxides with acetic anhydride.
- Zeynizadeh, Behzad,Gilanizadeh, Masumeh,Aminzadeh, Farkhondeh Mohammad
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p. 1051 - 1056
(2016/07/06)
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- Mild regiospecific alcoholysis and aminolysis of epoxides catalyzed by zirconium(IV) oxynitrate
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A regiospecific method for the ring-opening reaction of epoxides by the primary, secondary, tertiary alcohols, and aryl, aliphatic amines has been developed using non-toxic metal nitrate salt as a catalyst. The best results were obtained using zirconium(IV) oxynitrate among the various screened metal nitrate salts. The reported protocol works efficiently for styrene epoxide and aliphatic as well.
- Shinde, Sandip S.,Said, Madhukar S.,Surwase, Trupti B.,Kumar, Pradeep
-
supporting information
p. 5916 - 5919
(2015/11/02)
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- Enhanced metal loading in SBA-15-type catalysts facilitated by salt addition: Synthesis, characterization and catalytic epoxide alcoholysis activity of molybdenum incorporated porous silica
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We report a novel method to increase the metal loading in SBA-15 silica matrix via direct synthesis. It was demonstrated through the synthesis and characterization of a series of molybdenum containing SBA-15 mesoporous silica catalysts prepared with and without diammonium hydrogen phosphate (DHP) as an additive. Catalysts prepared with DHP show a 2-3 times increase in incorporation of molybdenum in the silica matrix and pore size enlargement. The synthesized catalysts were characterized using nitrogen sorption, X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and inductively coupled plasma-optical emission spectroscopy (ICP-OES). The catalytic activity of catalysts prepared with DHP for alcoholysis of epoxides was superior than the catalyst prepared without DHP. Alcoholysis of epoxides was demonstrated for a range of alcohols and epoxides under ambient conditions in as little as 30 min with high selectivity.
- Budhi, Sridhar,Peeraphatdit, Chorthip,Pylypenko, Svitlana,Nguyen, Vy H.T.,Smith, Emily A.,Trewyn, Brian G.
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p. 469 - 476
(2014/03/21)
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- Synthesis, structures, and heterogeneous catalytic applications of {Co 3+-Eu3+} and {Co3+-Tb3+} heterodimetallic coordination polymers
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Two {Co3+-Eu3+} and {Co3+-Tb3+} heterodimetallic coordination polymers have been synthesized by using a Co 3+-based coordination complex as the building block. Structural studies show that the lanthanide atoms are coordinated to the cobalt complex through Oamide groups. This results in the generation of a one-dimensional zigzag coordination polymer. These coordination polymers have been shown to catalyze the ring-opening reactions of the epoxides with anilines and alcohols under heterogeneous and solvent-free conditions. Interestingly, a perfect regioselectivity was observed in the aminolysis and alcoholysis reaction of styrene oxide. Two {Co3+-Eu3+} and {Co 3+-Tb3+} zigzag coordination polymers have been synthesized by using a Co3+-based coordination complex. These coordination polymers have been shown to catalyze the ring-opening reactions of epoxides with anilines and alcohols under heterogeneous and solvent-free conditions.
- Kumar, Girijesh,Singh, Amit Pratap,Gupta, Rajeev
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experimental part
p. 5103 - 5112
(2011/02/17)
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- An environmentally benign catalytic method for efficient and selective nucleophilic ring opening of oxiranes by zirconium tetrakis(dodecyl Sulfate)
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An operationally simple and environmentally benign protocol for a highly regio- and chemoselective preparation of β-substituted alcohols by means of ring-opening reactions of oxiranes with various aliphatic alcohols, H 2O, NaN3 , and NaCN as nucleophiles in the presence of catalytic amounts of zirconium tetrakis(dodecyl sulfate) as Lewis acid/surfactant-combined catalysts (LASCs) was developed. The high efficiency of the catalyst was confirmed by the high product yields obtained within desired times and, in particularly by the reusability of the ZrIV complex.
- Jafarpour, Maasoumeh,Rezaeifard, Abdolreza,Aliabadi, Marzieh
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scheme or table
p. 405 - 413
(2010/05/19)
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- The use of H2O2 over titanium-grafted mesoporous silica catalysts: A step further towards sustainable epoxidation
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The epoxidation of cyclohexene with aqueous hydrogen peroxide over mesostructured Ti(Cp)2Cl2-grafted silica catalysts is described for the first time. Three kinds of Ti-containing systems with different textural properties have been employed: Ti/SiO2, Ti/MCM-41 and Ti/MCM-48. A minimal local H2O2 concentration in the surroundings of Ti sites, obtained by a controlled dropwise addition of aqueous H2O2 (4.17 mmol H2O2 h-1 gcat-1), is crucial for an effective and highly selective epoxidation. Excellent selectivity (>98%) in cyclohexene epoxide is obtained at the end of the slow H2O2 addition in acetonitrile. Higher yields in epoxide are found over Ti/MCM-48 than over Ti/MCM-41 or Ti/SiO2 thanks to better isolation, dispersion and stability of Ti(iv) sites. The Royal Society of Chemistry 2009.
- Guidotti, Matteo,Pirovano, Claudio,Ravasio, Nicoletta,Lazaro, Beatriz,Fraile, Jose M.,Mayoral, Jose A.,Coq, Bernard,Galarneau, Anne
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scheme or table
p. 1421 - 1427
(2010/06/13)
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- Erbium(III) triflate is a highly efficient catalyst for the synthesis of β-alkoxy alcohols, 1,2-diols and β-hydroxy sulfides by ring opening of epoxides
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Chemo- and stereoselectivity in the ring-opening reaction of epoxides with erbium(III) triflate are described. Epoxides can be cleaved under neutral conditions with alcohols and thiols in the presence of catalytic amounts of Lewis acid, affording the corresponding β-alkoxy alcohols and β-hydroxy sulfides in high yields. In water, epoxide ring opening occurs to produce the corresponding diols in good yields.
- Dalpozzo, Renato,Nardi, Monica,Oliverio, Manuela,Paonessa, Rosina,Procopio, Antonio
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experimental part
p. 3433 - 3438
(2010/02/28)
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- Rapid ring-opening reactions of epoxides using microwave irradiation
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Copper tetrafluoroborate catalyzes the ring-opening of epoxides with primary, secondary, and tertiary alcohols in short reaction times under microwave irradiation to give β-alkoxyalcohol products in excellent yields. Copyright Taylor & Francis Group, LLC.
- Torborg, Christian,Hughes, David D.,Buckle, Richard,Robinson, Mathew W. C.,Bagley, Mark C.,Graham, Andrew E.
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p. 205 - 211
(2008/03/17)
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- Mild and efficient ring opening of epoxides catalyzed by potassium dodecatungstocobaltate(III)
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Efficient ring opening of epoxides under mild conditions is reported. Potassium dodecatungstocobaltate(III) trihydrate was used as an efficient catalyst for the alcoholysis and acetolysis of epoxides. Conversion of epoxides to thiiranes was also performed efficiently in the presence of this catalyst. Springer-Verlag 2005.
- Tangestaninejad, Shahram,Moghadam, Majid,Mirkhani, Valiollah,Yadollahi, Bahram,Mirmohammadi, S. Mohammad R.
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p. 235 - 242
(2007/10/03)
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- [γ-1,2-H2SiV2W10O40] immobilized on surface-modified SiO2 as a heterogeneous catalyst for liquid-phase oxidation with H2O2
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An organic-inorganic hybrid support has been synthesized by covalently anchoring an N-octyldihydroimidazolium cation fragment onto SiO2 (denoted as 1-SiO2). This modified support was characterized by solid-state 13C, 29Si, and 31P NMR spectroscopy, IR spectroscopy, and elemental analysis. The results showed that the structure of the dihydroimidazolium skeleton is preserved on the surface of SiO2. The modified support can act as a good anion exchanger, which allows the catalytically active polyoxometalate anion [γ-1,2-H 2SiV2W10O40]4- (I) to be immobilized onto the support by a stoichiometric anion exchange (denoted as I/1-SiO2). The structure of anion I is preserved after the anion exchange, as confirmed by IR and 51V NMR spectroscopy. The catalytic performance for the oxidation of olefins and sulfides, with hydrogen peroxide (only one equivalent with respect to substrate) as the sole oxidant, was investigated with I/1-SiO2. This supported catalyst shows a high stereospecificity, diastereoselectivity, regioselectivity, and a high efficiency of hydrogen peroxide utilization for the oxidation of various olefins and sulfides without any loss of the intrinsic catalytic nature of the corresponding homogeneous analogue of I (i.e., the tetra-n-butylammonium salt of I, TBA-I), although the rates decreased to about half that with TBA-I. The oxidation can be stopped immediately by removal of the solid catalyst, and vanadium and tungsten species' can hardly be found in the filtrate after removal of the catalyst. These results rule out any contribution to the observed catalysis from vanadium and tungsten species that leach into the reaction solution, which means that the observed catalysis is truly heterogeneous in nature. In addition, the catalyst is reusable for both epoxidation and sulfoxidation without any loss of catalytic performance.
- Kasai, Jun,Nakagawa, Yoshinao,Uchida, Sayaka,Yamaguchi, Kazuya,Mizuno, Noritaka
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p. 4176 - 4184
(2007/10/03)
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- Trans dialkoxylation of cyclic alkenes: A Prevost-type reaction
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Reaction of anhydrous silver perchlorate, sym-collidine, and iodine (2:1:1 molar ratio) with cyclic alkenes and an excess of an alcohol in CH 2Cl2 affords trans-1,2-dialkoxycycloalkanes in high yields and purity. The reaction occurs via initial formation of the trans-iodoethers, which undergo Ag-assisted iodide abstraction to give the trans-diethers. Georg Thieme Verlag Stuttgart.
- Schauble, J. Herman,Trauffer, Edward A.,Deshpande, Prashant P.,Evans, Robert D.
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p. 1333 - 1339
(2007/10/03)
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- Aluminium triflate: A remarkable Lewis acid catalyst for the ring opening of epoxides by alcohols
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Al(OTf)3 was found to be an extremely effective catalyst (at ppm levels) for ring opening reactions of epoxides using a range of alcohols. The Royal Society of Chemistry 2005.
- Bradley,Williams,Lawton, Michelle
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p. 3269 - 3272
(2007/10/03)
-
- Rapid and efficient ring opening of epoxides catalyzed by a new electron deficient tin(IV) porphyrin
-
The new electron deficient tin(IV) tetraphenylporphyrinato trifluoromethanesulfonate, [SnIV(tpp)(OTf)2], was used as an efficient catalyst for the alcoholysis, hydrolysis and acetolysis of epoxides. Conversion of epoxides to thiiranes and acetonides were also performed efficiently in the presence of this catalyst.
- Moghadam, Majid,Tangestaninejad, Shahram,Mirkhani, Valiollah,Shaibani, Reza
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p. 6105 - 6111
(2007/10/03)
-
- Magnesium hydrogensulfate: A cheap and efficient catalyst for the conversion of epoxides into β-alkoxy alcohols, vicinal-diols, and thiiranes
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The nucleophilic ring opening reactions of epoxides by aliphatic alcohols and water are achieved efficiently in the presence of catalytic amounts of magnesium hydrogensulfate, Mg(HSO4)2, with high degree of regioselectivity. The reactions are chemoselective and many of the other functional groups such as ethereal carbon oxygen bonds as well as carbon-carbon double bond remain intact under the reaction conditions. Epoxides also react with thiourea or ammonium thiocyanate in the presence of Mg(HSO 4)2 to afford the corresponding thiiranes in good to excellent yields.
- Salehi, Peyman,Khodaei, Mohammad Mahdi,Zolfigol, Mohammad Ali,Keyvan, Afsaneh
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p. 3041 - 3048
(2007/10/03)
-
- Efficient regio- and stereoselective ring opening of epoxides with alcohols, acetic acid and water catalyzed by ammonium decatungstocerate(IV)
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Epoxides can be cleaved in a regio- and stereoselective manner under neutral conditions with alcohols and acetic acid in the presence of catalytic amounts of decatungstocerate(IV) ion, ([CeW10O36] 8-), affording the corresponding β-alkoxy and β-acetoxy alcohols in high yields. In water, ring opening of epoxides occurs with this catalyst to produce the corresponding diols in good yields.
- Mirkhani, Valiollah,Tangestaninejad, Shahram,Yadollahi, Bahram,Alipanah, Ladan
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p. 8213 - 8218
(2007/10/03)
-
- Iron perchlorate on silica gel as multi-purpose reagent for catalysis of closure and rupture of carbon-oxygen bond in epoxides, alcohols, and esters
-
Aliphatic alcohols and water in the presence of catalytic amounts of Fe3+ ion introduced as iron(III) perchlorate on silica gel carrier perform efficient regiospecific opening of an epoxy ring. Carbon acids esterification with various type alcohols was carried out using the system Fe(ClO4)3-silica gel in dichloromethane under conditions excluding solvolysis. Acetylation and formylation of alcohols was performed by efficient transesterification with ethyl acetate and ethyl formate.
- Salechi,Khodaei,Ghareghani,Motlagh
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p. 794 - 796
(2007/10/03)
-
- Copper(II) tetrafluoroborate catalyzed ring-opening reaction of epoxides with alcohols at room temperature
-
(figure presented) Efficient ring opening of different epoxides by reaction with representative alcohols is presented. These processes were carried out at room temperature and rely on the usefulness of commercial copper tetrafluoroborate as catalyst.
- Barluenga, Jose,Vazquez-Villa, Henar,Ballesteros, Alfredo,Gonzalez, Jose M.
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p. 2817 - 2819
(2007/10/03)
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- Bismuth(III) chloride (BiCl3); an efficient catalyst for mild, regio- and stereoselective cleavage of epoxides with alcohols, acetic acid and water
-
Epoxides can be cleaved in a regio- and stereoselective manner with alcohols, acetic acid and water in the presence of catalytic amounts of bismuth(III) chloride, affording the corresponding β-alkoxy and β-acetoxy alcohols and diols in high yields.
- Mohammadpoor-Baltork,Tangestaninejad,Aliyan,Mirkhani
-
p. 2365 - 2374
(2007/10/03)
-
- Ferric perchlorate: An efficient reagent for regio- and stereoselective alcoholysis and hydrolysis of epoxides
-
Regio- and stereoselective ring opening reaction of epoxides is achieved efficiently by aliphatic alcohols and water in the presence of catalytic amounts of ferric perchlorate.
- Salehi, Peyman,Seddighi, Behnam,Irandoost, Mohsen,Kargar Behbahani, Farahnaz
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p. 2967 - 2973
(2007/10/03)
-
- Iron(III) trifluoroacetate as an efficient catalyst for solvolytic and nonsolvolytic nucleophilic ring opening of epoxides
-
Iron(III) trifluoroacetate was used as an efficient and nonhygroscopic catalyst for the alcoholysis, hydrolysis, and acetolysis of epoxides. The addition of chloride, bromide, iodide, and nitrate ions to epoxides to produce the corresponding 2-halo and 2-nitratoalkanols and also the conversion of epoxides to acetonides and thiiranes were also performed efficiently in the presence of this catalyst.
- Iranpoor, Nasser,Adibi, Hadi
-
p. 675 - 680
(2007/10/03)
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- TiCl3(OTf) and TiO(TFA)2 efficient catalysts for ring opening of epoxides with alcohols, acetic acid and water
-
TiCl3 (OTf) and TiO(TFA)2 can efficiently catalyze nucleophilic ring opening of epoxides in primary, secondary and tertiary alcohols, acetic acid and water to give the corresponding β-alkoxy alcohols, β-acetoxy alcohols and vicinal diols with high stereo- and regioselectivity in excellent yields. The reaction of optically active styrene oxide in MeOH with two titanium reagents was found to be highly stereospecific and afforded the corresponding S-(+)-2-methoxy-2-phenyl ethanol in 89-95% ee.
- Iranpoor, Nasser,Zeynizadeh, Behzad
-
p. 1017 - 1024
(2007/10/03)
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- Metal silicates by a molecular route as catalysts for epoxidation of alkenes with tert-butyl hydroperoxide
-
Macroporous, site isolated metal silicates are synthesized by a molecular route; the molybdenum silicate is especially active for the selective epoxidation of alkenes with tert-butyl hydroperoxide.
- Juwiler, David,Blum, Jochanan,Neumann, Ronny
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p. 1123 - 1124
(2007/10/03)
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- FeCl3·6H2O supported on SiO2 catalysed ring opening of epoxides with alcohols, acetic acid, water, chloride, bromide and nitrate ions
-
FeCl3·6H2O absorbed on chromatographic silica gel can act as an efficient catalyst for alcoholysis, hydrolysis and acetolysis of epoxides. Methanolysis of (R)-styrene oxide proceeds with high stereospecificity and in excellent yield. This catalyst can also convert epoxides to their corresponding β-halohydrins and β-nitrato alcohols in the presence of chloride, bromide and nitrate ions respectively.
- Iranpoor, Nasser,Tarrian, Tahere,Movahedi, Zarangiz
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p. 1473 - 1476
(2007/10/03)
-
- Fe3+-montmorillonite: An efficient heterogeneous catalyst for highly regioselective alcoholysis of epoxides
-
Fe3+- exchanged montmorillonite (Fe3+ -mont) has shown to be a very efficient catalyst for regio and stereoselective alcoholysis of epoxides in primary, secondary and tertiary alcohols as solvents and nucleophiles. Copyright
- Choudary, Boyapati M.,Sudha, Yepuri
-
p. 2989 - 2992
(2007/10/03)
-
- Highly efficient, regio- and stereoselective alcoholysis of epoxides catalyzed with iron(III) chloride
-
An efficient, catalytic, simple and mild method for the conversion of epoxides into their corresponding β-alkoxy alcohols was performed in primary, secondary and tertiary alcohols and in the presence of catalytic amounts of ferric chloride. The β-alkoxy alcohols were obtained with high stereo- and regioselectivity and in good to excellent yields.
- Iranpoor,Salehi
-
p. 1152 - 1154
(2007/10/02)
-
- Tris[Trinitrato Ce(IV)]paraperiodate, an efficient heterogeneous catalyst for alcoholysis, acetolysis and hydrolysis of epoxides
-
Tristrinitrato [Ce(IV)]paraperiodate (TTCPP) catalyses ring opening of epoxides in alcohols and water stereo- and regioselectively and under heterogeneous conditions to produce the corresponding β-alkoxy alcohols and 1,2 diols respectively in good to high yields. In acetic acid, ring opening and dimerization of epoxides occurs with this catalyst to produce the corresponding succinic acid derivatives in high yields.
- Iranpoor,Zardaloo
-
p. 1959 - 1969
(2007/10/02)
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- 2,3-Dichloro-5,6-dicyano-p-benzoquinone, an efficient, mild, neutral and highly regioselective catalyst for alcoholysis of epoxides
-
Ring-opening reactions of epoxides with catalytic amounts of 2,3- Dichloro-5,6-Dicyano-p-Benzoquinone (DDQ) are performed with high regioselectivity under neutral conditions, in primary, secondary and tertiary alcohols as solvents and nucleophiles. The corresponding β- alkoxy alcohols were obtained in excellent yields.
- Iranpoor,Mohammadpour Baltork
-
p. 735 - 738
(2007/10/02)
-
- Mild, Efficient and Selective Opening of Epoxides with Alcohols Catalyzed by Ceric(IV) Ammonium Nitrate
-
Commercially available Ceric(IV) Ammonium Nitrate (CAN) catalyzes nucleophilic ring opening of epoxides in primary, secondary and tertiary alcohols under mild conditions.The corresponding β-alkoxy-alcohols were obtained with high regio and stereoselectivity in high yields.
- Iranpoor, N.,Baltork, I. Mohammadpour
-
p. 2789 - 2797
(2007/10/02)
-