作者:Ariane Adolf、Ulf Vogel、Manfred Zabel、Alexey Y. Timoshkin、Manfred Scheer
DOI:10.1002/ejic.200800305
日期:2008.8
formula [(C6F5)3BH][RPH2·BH2·NHCMe] (4a: R = H, 4b: R = Cp*, 4c: R = Ph). To synthesise the Lewis acid/base stabilised phosphanylborane with (C6F5)3B as a Lewis acid and 1,3,4,5-tetramethylimidazolylidene (NHCMe) as a Lewis base, a different synthetic pathway was applied: the replacement reaction of the Lewis base. At room temperature, NHCMe displaced the amine in (C6F5)3B·P(Ph)HBH2·NMe3 to yield (C6F
研究了 2-硼烷-1,3,4,5-四甲基咪唑啉 (BH3·NHCMe) 与路易斯酸 B(C6F5)3 和 Ga(C6F5)3 的选定膦加合物的反应。其中,加合物 (C6F5)3Ga·PH2Cp* (1a) 和 (C6F5)3B·PH2Cp* (2) 用作起始材料。当 (C6F5)3Ga-膦加合物 1a 和 (C6F5)3Ga·PPhH2 用 BH3·NHCMe 处理时,路易斯酸/碱稳定的膦基硼烷 (C6F5)3Ga·P(Cp*)HBH2·NHCMe (3a) 和 (C6F5 )3Ga·P(Ph)HBH2·NHCMe (3b) 分别通过氢消除反应形成。相反,BH3·NHCMe 与 (C6F5)3B-膦加合物 (C6F5)3B·PH2R [R = H, R = Cp* (2) and R = Ph] 在 CH2Cl2 中在室温下反应导致形成具有通式 [(C6F5)3BH][RPH2·BH2·NHCMe]