Zinc-catalyzed chemoselective alkylation of α-keto amides with 2-alkylazaarenes
作者:Alagesan Muthukumar、Govindasamy Sekar
DOI:10.1039/c6ob02432g
日期:——
addition of 2-alkylazaarenes to α-keto amides to furnish azaarene incorporated α-hydroxy amides has been developed with a wide range of substrates in moderate to excellent yields, respectively. Chemoselectivealkylation of the keto functionality of the α-keto amides in the presence of simple ketones is the key advantage of this Zn-catalyzed transformation. This approach has been demonstrated to one gram-scale
已经开发了一种锌催化的C-(sp 3)-H将2-烷基氮杂芳烃添加到α-酮基酰胺中以提供掺入氮杂芳烃的α-羟基酰胺的方法,该方法分别在中等到极好的收率下使用了多种底物。在简单的酮存在下,α-酮酰胺的酮官能团的化学选择性烷基化是这种锌催化转化的关键优势。这种方法已被证明可以进行一克规模的合成。1 H NMR和D 2 O交换实验研究表明该反应通过Zn-烯酰胺中间体进行。
Chemoselective reduction of α-keto amides using nickel catalysts
作者:N. Chary Mamillapalli、Govidasamy Sekar
DOI:10.1039/c4cc02744b
日期:——
Ni-catalysts are used for the first time to synthesize α-hydroxy amides and β-amino alcohols from α-keto amides by chemoselective and complete reduction using hydrosilanes.
Chemo- and Enantioselective Reduction of α-Keto Amides to α-Hydroxy Amides using Reusable CuO-Nanoparticles as Catalyst
作者:Gollapalli Narasimha Rao、Govindasamy Sekar
DOI:10.1021/acs.joc.3c00090
日期:2023.3.17
(CuO-NPs) and (R)-(−)-DTBM SEGPHOS catalyzed chemo- and enantioselectivereduction of α-keto amides to α-hydroxy amides has been developed. The scope of the reaction has been studied with various α-keto amides containing electron-donating and electron-withdrawing groups affording the enantiomerically enriched α-hydroxy amides in good yields with excellent enantioselectivity. The CuO-NPs catalyst has been