BORON-NITROGEN COMPOUNDS .79. REACTION OF 2-METHYLTHIO-1,3,2-DIAZABORACYCLOALKANES WITH ANHYDROUS AMMONIA

1,3-Dimethyl-2-methylthio-1,3,2-diazaboracycloalkane, CH3S-B(-NCH3-CH2-)2CH2, interacts with anhydrous ammonia by simple displacement of the CH3S group to yield the corresponding NH2 derivative, H2N-B(-NCH3-CH2-)2CH2.In contrast, reaction of 1,3-dimethyl-2-methylthio-1,3,2-diazaboracyclopentane with ammonia proceeds with simultaneous condensation and bis(1,3-dimethy1-1,3,2-diazaboracyclopent-2-yl)amine, HN[B(-NCH3-CH2-)2]2 is obtained. © 1979, Taylor & Francis Group, LLC. All rights reserved.