ALY, FAWZY M.;BEDAIR, AHMED H.;SELIM, MOHAMED R., AFINIDAD, 44,(1987) N 412, 489-491
作者:ALY, FAWZY M.、BEDAIR, AHMED H.、SELIM, MOHAMED R.
DOI:——
日期:——
Silicon-assisted O-heterocyclic synthesis: mild and efficient one-pot syntheses of (E)-3-arylideneflavanones, coumarin-3-carbonitriles/ carboxamides, and benzannulated spiropyran derivatives
作者:Tarek A. Salama、Mohamed A. Ismail、Abdel-Galil M. Khalil、Saad S. Elmorsy
DOI:10.3998/ark.5550190.0013.921
日期:——
one-pot synthesis of ( E )-benzylideneflavanones, dibenzospiropyrans and coumarin-3-carbonitriles/carboxamides is achieved through tandem aldol-cyclocondensation of o -hydroxyaryl carbonyl compounds with aryl aldehydes or enolisable ketones or through Knoevenagel reaction by the aid of SiCl 4 /EtOH at ambient temperature. Keywords: O-Heterocycles, tetrachlorosilane-ethanol, one-pot synthesis, cyclocondensation