Rh-catalyzed intramolecular debenzylative cyclization of amines. Butyrolactams from benzylamines having a chloroacetylene moiety
摘要:
When benzylamines having a chloroacetylene moiety were heated in wet toluene with a catalytic amount of rhodium trifluoroacetate dimer, intramolecular debenzylative cyclization took place to give butyrolactams. This method is a new entry to selective debenzylation of amines. (C) 2011 Elsevier Ltd. All rights reserved.
An unprecedented efficient method for the reductive amination of carbonyl derivatives with ω-amino fatty acids under hydrosilylation conditions was developed leading to the corresponding lactams. A variety of pyrrolidinones, piperidinones, 2-azepanones were prepared in up to 95 % isolated yields (29 examples).
Iridium-Catalyzed Single-Step <i>N</i>-Substituted Lactam Synthesis from Lactones and Amines
作者:Kicheol Kim、Soon Hyeok Hong
DOI:10.1021/acs.joc.5b00101
日期:2015.4.17
Catalytic lactam synthesis was achieved directly from lactones and amines using an Ir catalyst. Three sequential transformations—aminolysis of lactone, N-alkylation of amine with hydroxyamide, and intramolecular transamidation of aminoamide—afforded the corresponding N-substituted lactams.
Reactivity Umpolung of Tertiary Amide Enabled by Catalytic Reductive Stannylation
作者:Qiu Shi、Wenbo H. Liu
DOI:10.1002/anie.202309567
日期:2023.9.11
Amide carbonyl group usually serves as the electrophile, which can react with various nucleophiles. The current work shows a process to achieve the umpolung reactivity of tertiaryamide carbonyl group. By leveraging this strategy, tertiaryamide can react with a wide range of electrophiles to produce complex amines.