P-H bond activation of primary phosphine-boranes: Access to alpha-hydroxy and alpha,alpha'-dihydroxyphosphine-borane adducts by uncatalyzed hydrophosphination of carbonyl derivatives

被引:71
作者
Bourumeau, K [1 ]
Gaumont, AC [1 ]
Denis, JM [1 ]
机构
[1] UNIV RENNES 1,GRP PHYSICOCHIM STRUCT,EQUIPE ASSOCIEE CNRS URA 704,F-35042 RENNES,FRANCE
关键词
primary phosphine-boranes; hydrophosphination; alpha-hydroxyalkylphosphine-boranes; hydroboration; P-alkylation;
D O I
10.1016/S0022-328X(96)06640-5
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Primary P-phenyl and P-methyl phosphine-boranes 1 and 2 are prepared by complexation of the free phosphines with BH3 . SMe2. They are stable and can be purified by distillation. Under basic conditions, they lead selectively to secondary alkylphosphine-boranes and under neutral conditions to the corresponding mono- and bis-hydroxyphosphine-boranes 5 and 6. All these new compounds are purified by chromatography on silica gel. A competitive hydroboration induced by the decomplexation of BH3 is observed as a minor process. Conditions for the decomplexation of phosphine-borane adducts are presented.
引用
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页码:205 / 213
页数:9
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