Reactions of catecholborane with Wilkinson's catalyst: implications for transition metal-catalyzed hydroborations of alkenes

K Burgess, WA Van der Donk, SA Westcott…

Index: Burgess, Kevin; Van Der Donk, Wilfred A.; Westcott, Stephen A.; Marder, Todd B.; Baker, R. Thomas; Calabrese, Joseph C. Journal of the American Chemical Society, 1992 , vol. 114, # 24 p. 9350 - 9359

Full Text: HTML

Citation Number: 244

Abstract

Abstract: Reactions of catecholborane (HBO2C6H4) with R~ CI (PP~ I~)~(1) yield a variety of products depending on the B/Rh ratio, solvent, and temperature. Of particular relevance to catalyzed alkene hydroboration is degradation of HB02C6H4 to B2 (02C6H1) 3/'BH3'and the dihydride RhH2CI (PPhJ3 (3). The molecular structure of 3, determined by X-ray diffraction, has meridional phosphine ligands and cis hydrides. Catalyst systems formed ...