2, 6-Disubstituted aryloxyiminoboranes, ArxOB⋮ NBut (Arx= 2, 6-But2C6H3 or 2, 6- Ph2C6H3), were obtained by treatment of ArxOB (Cl) N (H) But with tBuLi in hexane at-78° C. These intermediates are detected by 11B NMR and confirmed by insertion reactions with
[Hitchcock, Peter B.; Jasim, Hatam A.; Lappert, Michael F.; Williams, Hugh D. Journal of the Chemical Society, Chemical Communications, 1984 , # 10 p. 662 - 664]