Enantioselective Petasis reaction among salicylaldehydes, amines, and organoboronic acids catalyzed by BINOL
摘要:
The catalytic enantioselective three-component Petasis reaction among salicylaldehydes, amines, and organoboronic acids has been developed with readily available chiral BINOL as catalyst. Various salicylaldehydes, secondary amines, and organoboronic acids were found to be suitable substrates for the reaction. A broad range of desired alkylaminophenol products were obtained in good yields (up to 87%) and moderate to good enantioselectivities (up to 86% ee). (c) 2012 Elsevier Ltd. All rights reserved.
The catalytic enantioselective three-component Petasis reaction among salicylaldehydes, amines, and organoboronic acids with a newly designed thiourea-binol catalyst is presented. A broad range of alkylaminophenols can be obtained in good yield (up to 92%) and good to high enantioselectivity (up to 95% ee). A possible reaction pathway for this catalytic enantioselective Petasis reaction is tentatively proposed.
Enantioselective Petasis reaction among salicylaldehydes, amines, and organoboronic acids catalyzed by BINOL
The catalytic enantioselective three-component Petasis reaction among salicylaldehydes, amines, and organoboronic acids has been developed with readily available chiral BINOL as catalyst. Various salicylaldehydes, secondary amines, and organoboronic acids were found to be suitable substrates for the reaction. A broad range of desired alkylaminophenol products were obtained in good yields (up to 87%) and moderate to good enantioselectivities (up to 86% ee). (c) 2012 Elsevier Ltd. All rights reserved.