Synthesis of Dibenzo[<i>d</i>,<i>f</i>][1,3]Diazepines via Elemental Sulfur-Mediated Cyclocondensation of 2,2′-Biphenyldiamines with 2-Chloroacetic Acid Derivatives
作者:Tatyana A. Tikhonova、Konstantin A. Lyssenko、Igor V. Zavarzin、Yulia A. Volkova
DOI:10.1021/acs.joc.9b02002
日期:2019.12.20
three-component reaction of 2,2'-biphenyldiamines with 2-chloroacetic acid derivatives and elemental sulfur was developed for the practical synthesis of unknown 2-carboxamide-substituted dibenzo[d,f][1,3]diazepines. This protocol is distinguished by efficiency in water and good tolerance to functional groups and can be adapted to a large-scale synthesis. The chemoselective preparation of a variety of
开发了2,2'-联苯二胺与2-氯乙酸衍生物和元素硫的三组分反应,用于实际合成未知的2-羧酰胺取代的二苯并[d,f] [1,3]二氮杂s。该方案的特点是在水中的效率高,对官能团的耐受性强,可以适应大规模合成。使用开发的方法完成了各种2-S,N,O-取代的二苯并[d,f] [1,3]二氮杂卓的化学选择性制备。