Highly Enantioselective Access to Primary Propargylamines: 4-Piperidinone as a Convenient Protecting Group
摘要:
[graphics]We report a highly enantioselective, catalytic three-component coupling of aldehydes, alkynes, and 4-piperidone hydrochloride hydrate to afford the corresponding tertiary propargylamines in useful yields. The selective cleavage of the piperidone protecting group using either ammonia/EtOH or a polymer-supported scavenger amine furnishes primary propargylamines.
Highly Enantioselective Access to Primary Propargylamines: 4-Piperidinone as a Convenient Protecting Group
摘要:
[graphics]We report a highly enantioselective, catalytic three-component coupling of aldehydes, alkynes, and 4-piperidone hydrochloride hydrate to afford the corresponding tertiary propargylamines in useful yields. The selective cleavage of the piperidone protecting group using either ammonia/EtOH or a polymer-supported scavenger amine furnishes primary propargylamines.