A regioselective etherification of pyridoxine via an ortho -pyridinone methide intermediate
摘要:
The catalyst-free, regioselective synthesis of 4'-O-substituted pyridoxine derivatives under solventless conditions is described. The methodology relies on the highly regioselective formation of the ortho-pyridinone methide from pyridoxine and subsequent oxa-Michael addition of alcohol nucleophiles. This methodology provides good to excellent yields for primary and secondary alcohols and moderate yields for tertiary alcohols. (C) 2017 Elsevier Ltd. All rights reserved.
A regioselective etherification of pyridoxine via an ortho -pyridinone methide intermediate
作者:Jessica A. Yazarians、Brian L. Jiménez、Gregory R. Boyce
DOI:10.1016/j.tetlet.2017.04.082
日期:2017.6
The catalyst-free, regioselective synthesis of 4'-O-substituted pyridoxine derivatives under solventless conditions is described. The methodology relies on the highly regioselective formation of the ortho-pyridinone methide from pyridoxine and subsequent oxa-Michael addition of alcohol nucleophiles. This methodology provides good to excellent yields for primary and secondary alcohols and moderate yields for tertiary alcohols. (C) 2017 Elsevier Ltd. All rights reserved.