REACTION OF 1,2-BORYLPHISPHINOETHENE WITH PHENYL ISOTHIOCYANATE AND CARBODIIMIDES

Article abstract of DOI:10.1007/BF00961383

The reaction of 1-butyl-1-dibutylboryl-2-phenyl-2-diphenylphosphinoethene with phenyl isothiocyanate is a <4 + 2>-cycloaddition that involves the C-N segment of the heterocumulune; it gives 2,2,3-tributyl-6-thioxo-1,4,5,5-tetraphenyl-1-aza-5-phosphine-2-boratacyclohex-3-ene.Similarly products of the reaction of 1,2-borylphosphinoethene with diphenyl- and dicyclohexylcarbodiimides rearrange vua the 1,2-B -> anionotropic C shift of the butyl fragment; the products are the respective 1,6,6-tributyl-3-imino-4,4,5-triphenyl-2-aza-4-phosphine-1-boratabicyclo<3.1.0>hexanes.