Reactions of catecholborane with Wilkinson's catalyst: implications for transition metal-catalyzed hydroborations of alkenes
作者:Kevin Burgess、Wilfred A. Van der Donk、Stephen A. Westcott、Todd B. Marder、R. Thomas Baker、Joseph C. Calabrese
DOI:10.1021/ja00050a015
日期:1992.11
Reactions of catecholborane (HBO 2 C 6 H 4 ) with RhCl(PPh 3 ) 3 (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 HBO 2 C 6 H 4 to B 2 (O 2 C 6 H 4 ) 3 /«BH 3 » and the dihydride RhH 2 Cl(PPh 3 ) 3 (3). The molecular structure of 3, determined by X-ray diffraction, has meridional phosphine
儿茶酚硼烷 (HBO 2 C 6 H 4 ) 与 RhCl(PPh 3 ) 3 (1) 的反应会根据 B/Rh 比、溶剂和温度产生多种产物。与催化的烯烃硼氢化特别相关的是 HBO 2 C 6 H 4 降解为 B 2 (O 2 C 6 H 4 ) 3 /«BH 3 » 和二氢化物 RhH 2 Cl(PPh 3 ) 3 (3)。3的分子结构,由X射线衍射确定,具有经向膦配体和顺式氢化物