258280-95-4Relevant articles and documents
Deprotonation from an N-methyl group in 2-[1-(dimethylamino)-1-methylethyl]phenylborane derivatives
Asakura, Mitsuhiro,Oki, Michinori,Toyota, Shinji
, p. 206 - 208 (2008/10/08)
Reaction of 2-[1-(dimethylamino)-1-methylethyl]phenyllithium (Ar*Li) with a trialkyl borate, B(OR)3, in the 3:1 ratio gave 1-Ar*-3,4,4-trimethyl-1,2,3,4-tetrahydro-3,1-benzazaborin as a major product together with the corresponding protonated compound and the boronic acid. The structure of the hetelocyclic compound was determined by X-ray analysis and NMR spectroscopy. This compound is formed via the deprotonation from one of the N-Me groups in Ar*2B(OR) by the remaining Ar*Li followed by the facile intramolecular cyclization between the boron and carbon atoms.