9-fluorenylmethyl esters as carboxyl protecting group
作者:Horst Kessler、Rainer Siegmeier
DOI:10.1016/s0040-4039(00)81385-4
日期:——
The use of 9-fluorenylmethyl esters for the protection of carboxylgroups is proposed. The advantage of this group is the selective deprotection under mild conditions using secondary amines without racemization.
Synthesis of 9-fluorenylmethyl esters using 9-fluorenylmethylchloroformate
作者:S.A.M. Mérette、A.P. Burd、J.J. Deadman
DOI:10.1016/s0040-4039(98)02364-8
日期:1999.1
9-Fluorenylmethyl esters of amino acids were synthesized by reacting 9-fluorenylmethylchloroformate with N-protected amino acids in the presence of diisopropylethylamine (DIPEA) as base and 4-dimethylaminopyridine (DMAP) as catalyst. (C) 1999 Elsevier Science Ltd. All rights reserved.