92067-05-5Relevant academic research and scientific papers
Contributions to the Chemistry of Boron, 139. Addition Compounds of Alkylhalogenoboranes with 1,3,2-Diazaborolidines: Structure, Stability, and Exchange Reactions
Anton, Klaus,Noeth, Heinrich,Pommerening, Hans
, p. 2479 - 2494 (2007/10/02)
Reactions of alkylhalogenoboranes RnBX3-n (n = 0-2) with the 1,3-dimethyl-1,3,2-diazaborolidines 1-4 yield stable 1:1 addition compounds 1a-e, 2a, 3a-d, 4a irrespective of the boron substituents.Coordination of the borane moiety occurs at a ring N atom.An X-ray structure determination of the BCl3-adduct 3a shows two enantiomers in the asymmetric unit, envelope ring conformation, and strong ?-bonding between the non-coordinated B an N atoms. - Equilibria of the 1:1 adducts with their ring cleavage products and their behaviour towards a second mol of BX3 was studied.In this case, replacement of the ring-BR group occurs.In contrast, haloboranes react with the 2-(dimethylamino)diazaborolidine 5 with R2N-substituent exchange while diborane yields in the first instance the (dimethylamino)borane adduct 5a.
