CATALYTIC DEHYDROCOUPLING OF AMINE-BORANE ADDUCTS TO FORM AMINOBORANES AND BORAZINES
作者:Cory A. Jaska、Karen Temple、Alan J. Lough、Ian Manners
DOI:10.1080/10426500490426683
日期:2004.4.1
dimeric [(1,4-C 4 H 8 )N─BH 2 ] 2 (2) and [PhCH 2 (Me)N─BH 2 ] 2 (3) or the monomeric aminoborane i Pr 2 N═BH 2 (4) under mild conditions. The catalytic dehydrocoupling of NH 3 ·BH 3 , MeNH 2 ·BH 3 , and PhNH 2 ·BH 3 at 45°C affords the borazine derivatives [RN─BH] 3 (5: R = H; 6: R = Me; 7:R = Ph). TEM analysis of the contents of the reaction solution for the [Rh(1,5-cod)(μ-Cl)] 2 catalyzed dehydrocoupling
使用后过渡金属配合物作为预催化剂,开发了一种温和的催化脱氢偶联途径,从伯胺或仲胺-硼烷加合物生成氨基硼烷和环硼氮烷衍生物。发现Me 2 NH·BH 3 的脱氢偶联在25°C 下由0.5 mol% [Rh(1,5-cod)(μ-Cl)] 2 催化得到[Me 2 N─BH 2 ] 2 (1) 定量后约。8 小时。这种新的催化方法扩展到其他二级加合物 RR 'NH·BH 3 ,得到二聚体 [(1,4-C 4 H 8 )N─BH 2 ] 2 (2) 和 [PhCH 2 (Me)N─BH 2 ] 2 (3) 或单体氨基硼烷i Pr 2 N=BH 2 (4) 在温和条件下。NH 3 ·BH 3 、MeNH 2 ·BH 3 和PhNH 2 ·BH 3 在45°C下催化脱氢偶联得到硼嗪衍生物[RN─BH] 3 (5: R = H; 6: R = Me; 7 :R = PH)。[Rh(1,