7495-11-6Relevant academic research and scientific papers
Palladium Catalyzed Aminocarbonylation of Benzylic Ammonium Triflates with Nitroarenes: Synthesis of Phenylacetamides
Yang, Li-Miao,Li, Shan-Shan,Zhang, You-Ya,Lu, Jin-Liang,Deng, Jing-Tong,Ma, Ai-Jun,Zhang, Xiang-Zhi,Zhang, Shu-Yu,Peng, Jin-Bao
supporting information, p. 2061 - 2065 (2021/02/26)
A palladium catalyzed reductive aminocarbonylation of benzylic ammonium triflates with nitroarenes for the synthesis of phenylacetamides was developed. Using Pd(acac)2/DPPF catalyst system, a range of different substituted phenylacetamides were prepared in moderate to good yields from benzylic ammonium triflates and nitroarenes through Csp3?N bond cleavage. A variety of alkyl, aryl, and halide substituents on both substrates can be used, and many useful functional groups can be tolerated. (Figure presented.).
[Co(MeTAA)] Metalloradical Catalytic Route to Ketenes via Carbonylation of Carbene Radicals
Chirila, Andrei,van Vliet, Kaj M.,Paul, Nanda D.,de Bruin, Bas
supporting information, p. 2251 - 2258 (2018/04/09)
An efficient synthetic strategy towards beta-lactams, amides, and esters involving “in situ” generation of ketenes and subsequent trapping with nucleophiles is presented. Carbonylation of carbene radical intermediates using the cheap and highly active cobalt(II) tetramethyltetraaza[14]annulene catalyst [Co(MeTAA)] provides a convenient one-pot synthetic protocol towards substituted ketenes. N-tosylhydrazones are used as carbene precursors, thereby bridging the gap between aldehydes and ketenes. Activation of these carbene precursors by the metalloradical cobalt(II) catalyst affords CoIII-carbene radicals, which subsequently react with carbon monoxide to form ketenes. In the presence of a nucleophile (imine, alcohol, or amine) in the reaction medium the ketene is immediately trapped, resulting in the desired products in a one-pot synthetic protocol. The β-lactams formed upon reaction with imines are produced in a highly trans-selective manner.
Identification and structure activity relationships of quinoline tertiary alcohol modulators of RORγt
Kummer, David A.,Cummings, Maxwell D.,Abad, Marta,Barbay, Joseph,Castro, Glenda,Wolin, Ronald,Kreutter, Kevin D.,Maharoof, Umar,Milligan, Cynthia,Nishimura, Rachel,Pierce, Joan,Schalk-Hihi, Celine,Spurlino, John,Urbanski, Maud,Venkatesan, Hariharan,Wang, Aihua,Woods, Craig,Xue, Xiaohua,Edwards, James P.,Fourie, Anne M.,Leonard, Kristi
, p. 2047 - 2057 (2017/04/10)
A high-throughput screen of the ligand binding domain of the nuclear receptor retinoic acid-related orphan receptor gamma t (RORγt) employing a thermal shift assay yielded a quinoline tertiary alcohol hit. Optimization of the 2-, 3- and 4-positions of the quinoline core using structure-activity relationships and structure-based drug design methods led to the discovery of a series of modulators with improved RORγt inhibitory potency and inverse agonism properties.
Copper-catalyzed synthesis of arylcarboxamides from aldehydes and isocyanides: The isocyano group as an N1 synthon
Liu, Jian-Quan,Shen, Xuanyu,Liu, Zhenhua,Wang, Xiang-Shan
supporting information, p. 6314 - 6317 (2017/08/10)
An interesting radical coupling reaction of aromatic aldehydes with isocyanides was disclosed for the synthesis of amides catalyzed by copper. According to the experimental results and mechanistic study, the isocyano group acted as an N1 synthon rather than exhibiting the carbene-like reactivity, exploiting a new reactivity profile of isocyanides.
Metal-free hydration of ynamides: Convenient approach to amides
Huang, Hai,Tang, Luning,Xi, Yang,He, Guangke,Zhu, Hongjun
, p. 1873 - 1876 (2016/04/19)
The trifluoroacetic acid (TFA) mediated hydration of ynamides was developed, which is an efficient approach for the synthesis of N-monosubstituted amides. This convenient method is effective with a wide range of substrates under room temperature condition, and the products are obtained in high to excellent yields through an easy work-up process.
A simple and greener approach for the amide bond formation employing FeCl3 as a catalyst
Basavaprabhu,Muniyappa, Krishnamurthy,Panguluri, Nageswara Rao,Veladi, Panduranga,Sureshbabu, Vommina V.
supporting information, p. 7746 - 7749 (2015/10/12)
Catalytic use of FeCl3 in the presence of glacial AcOH for the direct amidation of acid with amine in toluene has been described in this paper. The protocol worked well for the less nucleophilic aniline and its variants which gave the best results under the present reaction conditions. Amidation of bromoacetic acid and sterically hindered amino acid also proceed effectively to yield the corresponding amides. The protocol is catalytic and circumvents the use of stoichiometric amounts of reagents. The reaction led to water soluble by-products and thus makes the product isolation easier.
PHENYL LINKED QUINOLINYL MODULATORS OF RORyt
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Paragraph 0329, (2015/04/21)
The present invention comprises compounds of Formula I. wherein: R1, R2, R3, R4, R5, R6, R7, R8, and R9 are defined in the specification. The invention also
PHENYL LINKED QUINOLINYL MODULATORS OF ROR-GAMMA-T
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Page/Page column 83; 84, (2015/05/05)
The present invention comprises compounds of Formula I. Formula I wherein: R1, R2, R3, R4, R5, R6, R7, R8, and R9 are defined in the specification. The inve
Nitrogen enriched mesoporous organic polymer anchored copper(ii) material: An efficient and reusable catalyst for the synthesis of esters and amides from aromatic systems
Molla, Rostam Ali,Iqubal, Md. Asif,Ghosh, Kajari,Kamaluddin,Islam, Sk. Manirul
, p. 6546 - 6559 (2015/04/14)
A new copper-grafted mesoporous poly-melamine-formaldehyde (Cu-mPMF) has been synthesized from melamine and paraformaldehyde in DMSO medium, followed by grafting of Cu(ii) at its surface. Cu-mPMF has been characterized by elemental analysis, powder XRD, HR TEM, FE-SEM, N2 adsorption study, FT-IR, UV-vis DRS, TGA-DTA, EPR spectroscopy, Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). The Cu-grafted mesoporous material showed very good catalytic activity in methyl esterification of benzylic alcohols and amidation of nitriles. Moreover, the catalyst is easily recoverable and can be reused seven times without appreciable loss of catalytic activity in the above reactions. The highly dispersed and strongly bound Cu(ii) sites in the Cu-grafted mesoporous polymer could be responsible for the observed high activities of the Cu-mPMF catalyst. Due to strong binding with the functional groups of the polymer, no evidence of leached copper from the catalyst during the course of reaction emerged, suggesting true heterogeneity in the catalytic process. This journal is
Towards a sustainable synthesis of aniline-derived amides using an indirect chemoenzymatic process: Challenges and successes
Lal, Samridhi,Snape, Timothy J.
, p. 1609 - 1615 (2014/01/06)
A general, catalytic and sustainable synthesis of amides has been targeted which utilises a chemoenzymatic step to generate an activated amide coupling partner in situ. A screen of a series of known activating agents was performed and the successful agents taken forward to determine their utility in such a one-pot enzyme-catalysed process. In these studies, a new chemoselective reagent ((isopropylideneamino) 2-phenylacetate) has been identified, which demonstrates excellent selectivity for the acylation of primary anilines over secondary anilines, unlike the more conventional acid chloride equivalent, which is unselective. The development of a chemoenzymatic synthesis of 2-hydroxyethyl benzoates (ethylene glycol mono-benzoate esters) has also been achieved.
