Rhodium-catalyzed synthesis of γ-butyrolactams and pyrrolidines via cycloisomerization of N-tethered 1,6-enynes
摘要:
A rhodium-catalyzed cycloisomerization reaction of N-tethered 1,6-enynes with an intramolecular halogen shift has been developed, providing a useful process for the synthesis of stereo defined gamma-butyrolactam and pyrrolidine derivatives in good to excellent yields. Effects of both electronic feature and steric structure of the substrates on the outcome of the reaction were investigated. (C) 2010 Elsevier Ltd. All rights reserved.
Silver-catalyzed carbon dioxide incorporation into propargylic amides
作者:Seiya Uema、Nao Kojima、Tohru Yamada
DOI:10.1093/chemle/upae001
日期:2024.3.1
synthesis of oxazolidine-2,4-diones by silver-catalyzed CO2 incorporation into propargylic amides under base-free mild reaction conditions was developed. These conditions were applied to a variety of aryl- and alkyl-substituted propargylic amides to afford the corresponding oxazolidine-2,4-diones in high yields. Combined with iodination during the CO2 incorporation reaction, the present reaction was successfully
开发了一种在无碱温和反应条件下通过银催化的 CO2 掺入炔丙酰胺合成噁唑烷-2,4-二酮的方法。将这些条件应用于各种芳基和烷基取代的炔丙酰胺,以高产率得到相应的噁唑烷-2,4-二酮。结合 掺入反应过程中的碘化反应,本反应成功应用于农药己酮的合成。