One-Step RhCl3-Catalyzed Deprotection of Acyclic N-Allyl Amides
摘要:
[GRAPHICS]A convenient one-step RhCl3-catalyzed deprotection of acyclic N-allyl amides is described. Preliminary mechanistic studies reveal that the key to the success of the one-step deprotection process is the dual function of RhCl3 in alcohol solvents. Reaction of RhCl3 with n-PrOH not only provides an active rhodium hydride species to catalyze isomerization of N-allyl amides to corresponding enamides but also generates a crucial catalytic amount of HCl to convert the enamides to deallylated amides through N,O-acetal exchange.
One-Step RhCl<sub>3</sub>-Catalyzed Deprotection of Acyclic <i>N</i>-Allyl Amides
作者:Michael J. Zacuto、Feng Xu
DOI:10.1021/jo070553t
日期:2007.8.1
[GRAPHICS]A convenient one-step RhCl3-catalyzed deprotection of acyclic N-allyl amides is described. Preliminary mechanistic studies reveal that the key to the success of the one-step deprotection process is the dual function of RhCl3 in alcohol solvents. Reaction of RhCl3 with n-PrOH not only provides an active rhodium hydride species to catalyze isomerization of N-allyl amides to corresponding enamides but also generates a crucial catalytic amount of HCl to convert the enamides to deallylated amides through N,O-acetal exchange.
Application of episelenonium ion chemistry to heterocyclic ring closure