112328-24-2Relevant articles and documents
Atropisomerism in Boron-Nitrogen Heterocycles
Koester, Roland,Seidel, Guenter,Kerschl, Susanna,Wrackmeyer, Bernd
, p. 191 - 194 (2007/10/02)
Atropisomerism owing to hindered rotation about the N-aryl bond is observed in 4,5-diethyl-2,2,3-trimethyl-1-(o-trifluoromethyl)phenyl-2,5-dihydro-1H-1,2,5-azasila- (2) and -azastannaboroles (5).The compounds 2 and 5 are characterized by elemental analysis, mass spectra and 1H, 11B, 13C, 29Si and 119Sn NMR.The ortho-trifluoromethyl group serves as an additional NMR spectroscopic probe because of through space 19F-1H and 19F-13C spin spin coupling.Compound 5 is the first derivative of a 2,5-dihydro-1H-1,2,5-azastannaborol. - Key words: Atropisomerism, Boron-Nitrogen Heterocycles, Multinuclear NMR