A Practical and General Amidation Method from Isocyanates Enabled by Flow Technology
作者:Jason D. Williams、William J. Kerr、Stuart G. Leach、David M. Lindsay
DOI:10.1002/anie.201807393
日期:2018.9.10
The addition of carbonnucleophiles to isocyanates represents a conceptually flexible and efficient approach to the preparation of amides. This general synthetic strategy has, however, been relatively underutilized owing to narrow substrate tolerance and the requirement for less favourable reaction conditions. Herein, we disclose a high‐yielding, mass‐efficient, and scalable method with appreciable
Pd-Catalyzed Cross-Coupling of Potassium Alkenyltrifluoroborates with 2-Chloroacetates and 2-Chloroacetamides
作者:Gary A. Molander、Thiago Barcellos、Kaitlin M. Traister
DOI:10.1021/ol401377q
日期:2013.7.5
A protocol for the stereocontrolled synthesis of (E)- and (Z)-beta,gamma-unsaturated esters and amides is reported. 2-Chloroacetates as well as secondary and tertiary 2-chloroacetamides were successfully employed as electrophiles in the Suzuki-Miyaura cross-coupling reaction with potassium (E)- and (Z)-alkenyltrifluoroborates, affording the corresponding products in high yield.