作者:Nathalie Dubois、Daniel Glynn、Thomas McInally、Barrie Rhodes、Simon Woodward、Derek J. Irvine、Chris Dodds
DOI:10.1016/j.tet.2013.08.062
日期:2013.11
acids with primary and secondary amines under a variety of conditions (reflux, sealed tube, microwave) has been compared for a significant range of coupling partners of relevance to the preparation of amides of interest in pharmaceutical chemistry. Commercial microwave reactors promote the fastest couplings and allow the use of significantly sterically hinderedamines (primary and secondary) and carboxylic
Novel quenchers for solution phase parallel synthesis
作者:Sham S. Nikam、Brian E. Kornberg、Stephanie E. Ault-Justus、Michael F. Rafferty
DOI:10.1016/s0040-4039(97)10781-x
日期:1998.3
The bifunctionality of amino acids can be exploited by utilizing them as quenchers in rapid solutionphaseparallelsynthesis. The amino group was used to covalently trap the excess electrophiles, whereas the carboxylic acid moiety was used to solubilize the derivatized amino acid in water. As a prototype we used potassium sarcosinate as a quencher for excess electrophiles in the acylation or sulfonation