Direct Reductive Cyclocondensation of the Nitro Group with the Amido Group: Key Role of the Iminophosphorane Intermediate in the Synthesis of 1,4-Dibenzodiazepine Derivatives
作者:Michał Tryniszewski、Robert Bujok、Piotr Cmoch、Roman Gańczarczyk、Irena Kulszewicz-Bajer、Zbigniew Wróbel
DOI:10.1021/acs.joc.8b02682
日期:2019.2.15
A class of dialkylamino-substituted dibenzodiazepines and their hetero analogues was synthesized by the intramolecular aza-Wittig condensation of the amido group with iminophosphoranes. The one-pot, two-step procedure includes reductive synthesis of the intermediate iminophosphoranes from the corresponding nitroamides and tributylphosphine.
一类二烷基氨基取代的二苯并二氮杂-及其杂类似物是通过酰胺基与亚氨基正膦的分子内氮杂-维蒂希缩合反应合成的。一锅,两步程序包括从相应的硝基酰胺和三丁基膦还原合成中间体亚氨基正膦。