V. Sosnovskikh, B. Usachev, M. N. Permyakov
Sep 1, 2006
Citations
0
Influential Citations
11
Citations
Journal
Russian Chemical Bulletin
Abstract
Condensation of 2-trifluoromethylchromone with diethyl malonate, ethyl cyanoacetate, and Meldrum’s acid gave the corresponding methylidene derivatives of 2-trifluoromethyl-4H-chromene. Nucleophilic 1,6-addition of an excess of Me3SiCF3 in the presence of Me4NF to those obtained from the former two compounds afforded 4-substituted 2,2-bis(trifluoromethyl)-2H-chromenes.