A Highly Chemoselective and Rapid Chlorination of Benzyl Alcohols under Neutral Conditions
作者:Chunbao Li、Lili Sun、Guisheng Peng、Hongmei Niu、Qiang Wang
DOI:10.1055/s-0028-1083243
日期:2008.12
A rapid and highly selective chlorination method has been developedusing 2,4,6-trichloro-1,3,5-triazine (TCT) catalyzed by dimethylsulfoxide. The reactions take 10 to 40 minutes, and the yields arealmost quantitative. The neutral reaction conditions are compatiblewith substrates bearing acid-labile functional groups. Both competitiveintramolecular and intermolecular reactions for benzyl alcoholsin
使用二甲亚砜催化的 2,4,6-三氯-1,3,5-三嗪 (TCT) 开发了一种快速、高选择性的氯化方法。反应需要 10 到 40 分钟,产率几乎是定量的。中性反应条件与带有酸不稳定官能团的底物相容。苯甲醇在脂肪醇存在下的竞争性分子内和分子间反应均表明其选择性很高。该方法已成功用于临床上使用的神经药物天麻素的选择性氯化。该程序代表了有机和药物化学中一种有用的新工具。