[EN] A METHOD FOR GENERATING SECONDARY PHOSPHINES<br/>[FR] PROCEDE DE PRODUCTION DE PHOSPHINES SECONDAIRES
申请人:BOEHRINGER INGELHEIM PHARMA
公开号:WO2005068479A1
公开(公告)日:2005-07-28
This invention provides a method for generating secondary phosphines from secondary phosphine oxides in the presence of a reducing agent, such as diisobutylaluminum hydride (DIBAL-H), triisobutyldialuminoxane, triisobutylaluminum, tetraisobutyldialuminoxane, or another reducing agent comprising: (i) an R1R2AIH moiety, wherein R1 and R2 are each an alkyl species or oxygen, and wherein at least one of R1 or R2 comprises at least 2 carbon atoms, or (ii) an R1R2R3AI moiety, wherein R1, R2, and R3 are not hydrogen, and wherein at least one of R1, R2, and R3 is an alkyl species comprising a β-hydrogen, not including triethylaluminum. Preferred reducing agents for the present invention include: diisobutylaluminum hydride, triisobutyldialiuminoxane, triisobutylaluminum, tetraisobutyldialuminoxane, and combinations thereof.
这项发明提供了一种从二次膦氧化物中在还原剂的存在下生成二次膦的方法,所述还原剂可以是二异丁基铝氢化物(DIBAL-H)、三异丁基二氧化铝烷、三异丁基铝、四异丁基二氧化铝烷或另一种还原剂,所述还原剂包括:(i)一个R1R2AIH基团,其中R1和R2分别是烷基物种或氧,并且R1或R2中至少有一个包含至少2个碳原子,或(ii)一个R1R2R3AI基团,其中R1、R2和R3均不是氢,且R1、R2和R3中至少有一个是包含β-氢的烷基物种,不包括三乙基铝。本发明的优选还原剂包括:二异丁基铝氢化物、三异丁基二氧化铝烷、三异丁基铝、四异丁基二氧化铝烷以及它们的组合。