The effect of protecting groups on tin-lithium exchange in α-alkoxyalkyltrimethylstannanes
作者:J.Michael Chong、Nathan Nielsen
DOI:10.1016/s0040-4039(98)02203-5
日期:1998.12
MOM-protected alpha-hydroxytrimethylstannanes do not undergo tin-lithium exchange cleanly as their tributyl-counterparts do. Other protecting groups (e.g. N,N-diethylcarbamate) allow for clean transmetalation to occur presumably due to the formation of a more stable alpha-alkoxyorganolithium species. (C) 1998 Elsevier Science Ltd. All rights reserved.