Stereoselective synthesis of vinylic chalcogenides through vinylic substitution by lithium organylchalcogenolates
摘要:
Enol phosphates and enol tosilates of P-dicarbonyl compounds react with lithium organoselenolates to give beta-organo-seleno (Z) -alpha,beta-unsaturated carbonyl compounds. Tetrasubstituted vinylic vic-bis(organylchalcogenides) of (E)-geometry have been prepared by this method. (C) 2007 Elsevier Ltd. All rights reserved.
Treatment of ketones or aldehydes with selenium dioxide and diphenyl diselenide in the presence of acid catalyst afforded the corresponding α-phenylselenenyl carbonylcompounds in good yields.
Stereoselective synthesis of vinylic chalcogenides through vinylic substitution by lithium organylchalcogenolates
作者:C.C. Silveira、R.B. Guerra、J.V. Comasseto
DOI:10.1016/j.tetlet.2007.05.074
日期:2007.7
Enol phosphates and enol tosilates of P-dicarbonyl compounds react with lithium organoselenolates to give beta-organo-seleno (Z) -alpha,beta-unsaturated carbonyl compounds. Tetrasubstituted vinylic vic-bis(organylchalcogenides) of (E)-geometry have been prepared by this method. (C) 2007 Elsevier Ltd. All rights reserved.