Borylierung von Sulfamiden, Sulfoniminen und Sulfondiiminen/Borylation of Sulfamides, Sulfonimines and Sulfonediimines

Abstract

Abstract The diborylated sulfamide 6a can be obtained from 2-chloro-1,3-dimethyl-1,3,2-diazaborolidine and the silylated sulfamide la , whereas (Me2N)2BCl and 1a yield the dithia-tetrazadiborocine 7b. Similarly, (Me2N)2BCl reacts with a) the sulfonimine 2a, b) the sulfonediimine 3a to give a) B(NMe2)3, and the bis-and tris(sulfonimino)boranes 10b and 11, b) B(NMe2)3 and the dithiatetrazadiborocine 15b. The diborylated sulfamide 6c (R2B = Ph2B) cannot be isolated. The synthesis of the monoborylated sulfonimines 9c, 9e and sulfonediimines 13, 14 is described.