A Study of the Reactivity of Secondary Phosphanes with Radical Sources: A New Dehydrocoupling Reaction
作者:Robert J. Baker、Emtithal Hashem
DOI:10.1002/hlca.201000114
日期:——
The reactions of secondary phosphanes with radical sources have been investigated. A stoichiometric dehydrocoupling of Ph2PH with 1,1′‐azobis[cyclohexane‐1‐carbonitrile] (VAZO® 88) affords tetraphenyldiphosphane in good yields, whilst reduction of the nitrosyl function was observed upon using 2,2,6,6‐tetramethylpiperidin‐1‐oxyl (TEMPO). Dialkylphosphane–borane adducts also undergo a dehydrocoupling
已经研究了仲膦与自由基源的反应。化学计量的Ph dehydrocoupling 2与PH 1,1'-偶氮二[环己烷-1-腈](VAZO ® 88),得到tetraphenyldiphosphane以良好的收率,同时降低亚硝功能在使用时,观察到2,2,6,6-四甲基哌啶-1-氧基(TEMPO)。Dialkylphosphane -硼烷加合物也经历的存在下反应dehydrocoupling VAZO ® 88形成R 4 P 2。