The application of high pressure to some difficult Wittig reactions
作者:Neil S. Isaacs、Ghazi Najim El-Din
DOI:10.1016/s0040-4039(00)96078-7
日期:1987.1
Wittigreactions, previously shown to be favourably accelerated under pressure have been carried out between the stabilised ylides carboethoxymethylenetriphenylphosphorane and carboethoxy- ethylidinetriphenylphosphorane with a variety of ketones at 9–10 kbar pressure. Successful formation of tri- and tetra-substituted ethylenes is reported.