A convenient ‘catch, cyclize, and release’ preparation of 3-thio-1,2,4-triazoles mediated by polymer-bound BEMP
作者:Todd L Graybill、Sonia Thomas、Michelle A Wang
DOI:10.1016/s0040-4039(02)01055-9
日期:2002.7
A robust ‘catch, cyclize, and release’ preparation of 3-thioalkyl-1,2,4-triazoles mediated by the polymer-bound base P-BEMP is described. This reengineered synthesis combines the chemical efficiency of the classical synthesis (three steps; three diversity points) with the practical benefits of resin-bound reagents (use of excess reagents to drive reactions to completion, no purification of intermediates
描述了由结合聚合物的碱基P-BEMP介导的3-硫代烷基-1,2,4-三唑的强力“捕获,环化和释放”制备。这种经过重新设计的合成方法将经典合成方法的化学效率(三个步骤;三个多样性点)与树脂结合试剂的实际优势(使用过量试剂来驱动反应完成,无需纯化中间体,实现自动化)相结合。本文描述并介绍了该方案的主要优点/局限性,试剂的兼容性以及代表性的64人组合文库的结果。