Imidazobenzothiazine and primidobenzothiazine derivatives synthesis via an aliphatic SN2 substitution/Cu(I) catalyzed Ullmann coupling cascade process
作者:Ruihong Wang、Weixing Qian、Weiliang Bao
DOI:10.1016/j.tetlet.2011.11.072
日期:2012.1
method for the preparation of various imidazobenzothiazine and primidobenzothiazine derivatives from readily available 2-mercaptoimidazoles (thiouracils) and bromobenzyl bromides via a copper(I)-catalyzed one-pot cascade process has been developed. The reaction involves a SN2 process and an intramolecular C–N cross coupling cyclization.
已经开发了一种有效的方法,该方法通过铜(I)催化的一锅级联方法,从易于获得的2-巯基咪唑(硫尿嘧啶)和溴苄基溴化物中制备各种咪唑并苯并噻嗪衍生物和苄基苯并噻嗪衍生物。该反应涉及一个S N 2过程和一个分子内C–N交叉偶联环化反应。