CYCLISCHE CHIRALE TRIARYLBORANE MIT EINER B<-N-BINDUNG

Article abstract of DOI:10.1016/0022-328X(85)80063-2

The reaction of ortho-lithiated N,N-dimethyl-1-arylethyl-amines with triphenylboron leads, with elimination of phenyllithium, to (R)-(-)-2,2,3-trimethyl-1,1-diphenyl-1H-2-azonia-1-borata-indene (1), 2,3-dihydro-1,1,2-trimethyl-3,3-diphenyl-1H-2-azonia-3-borata-benzindene (2) and 2,3-dihydro-2,2,3-trimethyl-1,1-diphenyl-1H-2-azonia-1-borata-benzindene (3) with a strong B<-N bond. 1,2 and 3 are stable against oxygen, water and alcohols.Triarylboron compounds sensitive to the same reagents are formed by the reaction of triphenylboron with some aryllithium compounds substituted with electron-donating groups.