Intramolecular heteroconjugate addition of heterocumulenes to α,β-unsaturated carbonyl compounds promoted by the CS2/TBAF system
作者:Alberto Tárraga、Pedro Molina、Juan Luis López
DOI:10.1016/s0040-4039(00)00756-5
日期:2000.6
dihydroquinazoline-2-thione and 4H-3,1-benzothiazine-2-thione derivatives by intramolecular heteroconjugate addition of carbodiimides or isothiocyanates bearing one o-substituted α,β-unsaturated carbonyl fragment promoted by the CS2/TBAF system.
我们描述了一种新的制备二氢喹唑啉-2-硫酮和4 H -3,1-苯并噻嗪-2-硫酮衍生物的新方法,该方法是通过碳二亚胺或异硫氰酸酯的分子内杂合物加成,该碳二亚胺或异硫氰酸酯带有一个由o取代的α-β-不饱和羰基片段。 CS 2 / TBAF系统。