Biphilic properties of substituted triphenylphosphoranylideneacetonitriles bearing 4,5-Di(arylsulfonyl)-1,3-thiazol-2-yl fragments at the ylide center

Phosphonium ylides stabilized by nitrile and 4,5-di(arylsulfonyl)-1,3-thiazol-2-yl fragments show biphilic reactivity. They react with aromatic aldehydes upon heating revealing a noticeable activity of ylide center and are condensed with typical nucleophiles at C⁴ center of the thiazole ring with the elimination of arylsulfonyl group under mild conditions. New 1,3-thiazole derivatives were obtained whose structures were proved by chemical, spectal and X-ray structural investigations.