Efficient Cs2CO3-promoted solution and solid phase synthesis of carbonates and carbamates in the presence of TBAI
作者:Ralph N Salvatore、Feixia Chu、Advait S Nagle、Elona A Kapxhiu、Richard M Cross、Kyung Woon Jung
DOI:10.1016/s0040-4020(02)00286-7
日期:2002.4
Novel solution and solid-phase methods for the synthesis of carbonates and carbamates were developed using cesium bases and TBAI via a three-component coupling. Cesium carbonate not only promoted successful carbonylations of alcohols and carbamations of amines, but also suppressed common side reactions traditionally seen using existing protocols. Various alcohols and amines were examined, using a wide
Carbamates. IV. The Reactions of Disubstituted Carbamates with Alcohols
作者:NORMAN G. GAYLORD
DOI:10.1021/jo01081a012
日期:1960.11
Modular Access to Azepines by Directed Carbonylative C–C Bond Activation of Aminocyclopropanes
作者:Gang-Wei Wang、John F. Bower
DOI:10.1021/jacs.7b13087
日期:2018.2.28
A modular Rh-catalyzed entry to azepines is outlined. Under a CO atmosphere, protecting group directedC–Cbondactivation of aminocyclopropanes provides rhodacyclopentanones. These intermediates are effective for intramolecular C–H metalation of either an N-aryl or N-vinyl unit en route to azepine ring systems. Thus, byproduct-free heterocyclizations are enabled by sequential C–Cactivation and C–H