General and Efficient One-Pot Synthesis of Tertiary Phosphane–Borane Complexes Containing Different Alkyl Groups and In Situ Facile Recycling of the Phosphorus Donor Reagent
作者:Graziano Baccolini、Carla Boga、Marzia Mazzacurati
DOI:10.1002/ejoc.200700285
日期:2007.9
Tertiary symmetric and asymmetric phosphane–borane complexes containing different alkyl groups, including bulky groups, can be obtained by the addition of different Grignard reagents to benzothiadiphosphole 1 followed by direct complexation with BH3·THF. Treatment of the resulting mixture with PCl3 led to the reformation of the starting reagent 1, which was recovered from the reaction mixture by simple
通过将不同的格氏试剂加入苯并噻二磷 1 中,然后与 BH3·THF 直接络合,可以获得含有不同烷基(包括大基团)的三元对称和不对称磷烷 - 硼烷配合物。用PCl 3 处理所得混合物导致起始试剂1的重整,其通过简单的结晶从反应混合物中回收。磷烷配合物通过母液色谱纯化。这个过程是高度原子经济和环境友好的。鉴定了所有反应中间体。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)