Fukuyama–Mitsunobu alkylation in amine synthesis on solid phase revisited: N-alkylation with secondary alcohols and synthesis of curtatoxins
作者:Christian A. Olsen、Matthias Witt、Steen H. Hansen、Jerzy W. Jaroszewski、Henrik Franzyk
DOI:10.1016/j.tet.2005.04.027
日期:2005.6
sulfonamides, as well as a method for synthesis of polyamines on solidphase. Here, an array of reagent combinations for solid-phase alkylation with secondary alcohols was examined in various solvents. The classical reagents DEAD–PPh3 as well as DEAD–PEt3 proved applicable for a single alkylation step. Sharply dropping yields in successive alkylation steps were identified as the most serious limitation of the