Chichibabin-Type Direct Alkylation of Pyridyl Alcohols with Alkyl Lithium Reagents
摘要:
Direct C(6) alkylation of pyridyl alcohols can be achieved following an initial deprotonation of the hydroxy group. This transformation, which is believed to occur by a Chichibabin-type alkylation, avoids lateral deprotonation prior to pyridine ring alkylation and gives increased regioselectivity for C(6) over C(4) alkylation.
Chichibabin-Type Direct Alkylation of Pyridyl Alcohols with Alkyl Lithium Reagents
作者:Jenna L. Jeffrey、Richmond Sarpong
DOI:10.1021/ol3024117
日期:2012.11.2
Direct C(6) alkylation of pyridyl alcohols can be achieved following an initial deprotonation of the hydroxy group. This transformation, which is believed to occur by a Chichibabin-type alkylation, avoids lateral deprotonation prior to pyridine ring alkylation and gives increased regioselectivity for C(6) over C(4) alkylation.