作者:Neil J Hales、Harry Heaney、John H Hollinshead、Steven Mf Lai、Pritpal Singh
DOI:10.1016/0040-4020(95)00396-p
日期:1995.7
The [4+2]cycloadducts formed between tetrachlorobenzyne and a variety of arenes and cyclic 1,3-dienes have been reductively dechlorinated. The products are formally benzyne cycloadducts, many of which are difficult to make by other routes. High yields are obtained when sodium and t-butanol in boiling THF are used for the reduction. THF serves as a solvent but t-butanol not only acts as a proton donor
在四氯苯并与各种芳烃和环状1,3-二烯之间形成的[4 + 2]环加合物已被还原脱氯。该产品是正式的苯并环加合物,其中许多很难通过其他途径制备。当使用沸腾的THF中的钠和叔丁醇进行还原时,可获得高收率。THF用作溶剂,但叔丁醇不仅充当质子供体,而且似乎开始还原。每当需要苯并本身时,就应考虑将四氯苯甲酮视为替代试剂。