1. (c) Barton, L.; Srivastava, D. K.Comprehensive Organometallic Chemistry II; Pergamon Press: New York, 1995; Vol. 1, pp 275−372.
2. Shimoi, M.; Katoh, K.; Uruichi, M.; Nagai, S.; Ogino, H. InCurrentTopics in the Chemistry of Boron; Kabalka, G. W., Ed.; The Royal Society of Chemistry: London, 1994; pp 293−296.
3. Spectral data for3: 1H NMR (500 MHz, C6D6) δ −8.5 (br, 4H, BH), 0.67 (vt,JPH= 5.5 Hz, 12H, PMe2), 1.22 (t,2JPH= 11.3 Hz, 2H, CH);11B{1H} NMR(160.35 MHz, C6D6) δ −34.1 (br);31P{1H} NMR (202.35 MHz, C6D6) δ 14.5(br); IR (KBr) ν (CO) 2029.7 (m), 2006.6 (m), 1941.0 (m), 1899.5 (s), 1887.0 (s), 1870.6 (s), 1848.4 (s), 1826.3(m) cm-1.