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

Abstract

The diborylated sulfamide 6a can be obtained from 2-chloro-l ,3-dim ethyl-l .3.2-diazaborolidine and the silylated sulfamide la , whereas (M e2N )2BCl and la yield the dithiatetrazadiborocine 7b. Similarly

Synthesis and Properties of Bis(2-heteroaryl)borane Derivatives

“…Mass spectra were obtained with a ZAB-2F VH Micromass CTD spectrometer, HR mass spectra with a JEOL MS Station JMS 700 spectrometer both using the EI ionization technique. (Isopropyloxy)-bis(2-thienyl)borane (1d), [7] dichloro(diisopropylamino)borane, [13] dichloro(diethylamino)borane, [14] and dichloro(2,2,6,6-tetramethylpiperidino)borane [15] were prepared according to literature procedures.…”

Sulfamic Acid and Its N- and O-Substituted Derivatives

“…Syntheses of sulfamides 78 and 552 have been reported by the Dusemund group. , The dithiatetraazadiborocine 553 has been made by reaction of (NMe 2 SiMe 3 ) 2 SO 2 with (Me 2 N) 2 BCl . α-Sulfamidoalkylation has been used to synthesize cyclic sulfamides such as the dithiatetrazocinedicarboxylate tetroxide 554 made in 74% yield from BnNHSO 2 NH 2 and EtO 2 CCH(OEt) 2 in the presence of TFA …”