sodium hydroxide; N-benzyl-N,N,N-triethylammonium chloride in water
When a 1:1 mixture with diethyl ethylidenemalonate was treated with a deficiency of bromoform under phase transfer conditions, a 1:2 mixture of cyclopropanated product from the malonate and ethyl 4,4,4-tribromo-butanoate was formed.; Product distribution;
参考文献
Baird, Mark S.; Gerrard, Michele E.; Searle, Robert J. G.
Tetrahedron Letters, 1985 , vol. 26, # 51 p. 6353 - 6356
