Hydroformylation of 1,6-dienes with carbonylhydridotris(triphenylphosphine)rhodium
作者:Ronald Grigg、Gerald J. Reimer、Alan R. Wade
DOI:10.1039/p19830001929
日期:——
using [Rh(H)CO(PPh3)3] as catalyst. Octa-1,6-dienes are hydroformylated specifically at the terminal double bond and good selectivity for the n-aldehyde is observed when a 2:1 mixture of hydrogen and carbon monoxide are used. Both mono- and di-formyl derivatives are formed from 4,4-diacetylhepta-1,6-diene, with a strong preference for n-aldehydes. The effect of catalyst concentration on product distribution
使用[Rh(H)CO(PPh 3)3在室温和大气压下已实现了许多1,6-二烯的加氢甲酰化]作为催化剂。Octa-1,6-二烯专门在末端双键处被加氢甲酰化,当使用氢气和一氧化碳的2:1混合物时,可观察到对正醛的良好选择性。单-和二-甲酰基衍生物均由4,4-二乙酰基庚-1,6-二烯形成,强烈推荐使用正醛。报告了催化剂浓度对产物分布的影响。通过用一氧化硫或二氧化硫保护二烯部分作为其环加合物,可以选择性地将Octa-1,3,7-三烯加氢甲酰化,并且在亚甲基环戊烷进行区域特异性加氢甲酰化的同时,亚甲基环丁烷异构化为甲基环丁烯。