2,4,4,6-Tetrabromocyclohexa-2,5-dienone in the presence of triphenylphosphine as a specific reagent for nucleophilic substitution in cyanohydrins
摘要:
A convenient method for the synthesis of alpha-bromonitriles from aliphatic cyanohydrins using the 2,4,4,6-tetrabromocyclohexa-2,5-dienone complex with triphenylphosphine was developed.
Domino alkylation/oxa-Michael of 1,3-cyclohexanediones: Steering the C/O-chemoselectivity to reach tetrahydrobenzofuranones
作者:Rema B. Devi、Matthias Henrot、Michaël De Paolis、Jacques Maddaluno
DOI:10.1039/c1ob05923h
日期:——
An unprecedented domino synthesis of tetrahydrobenzofuran-4-ones is described implicating chemoselective alkylation of various 1,3-cyclohexanediones with bromocrotonate or crotonitrile followed by oxa-Michael cyclization. Further transformations of this core to reach molecular diversity are also presented.
2,4,4,6-Tetrabromocyclohexa-2,5-dienone in the presence of triphenylphosphine as a specific reagent for nucleophilic substitution in cyanohydrins
作者:Elena D. Matveeva、Tatyana A. Podrugina、Elena V. Tishkovskaya、Nikolai S. Zefirov
DOI:10.1070/mc2003v013n06abeh001830
日期:2003.1
A convenient method for the synthesis of alpha-bromonitriles from aliphatic cyanohydrins using the 2,4,4,6-tetrabromocyclohexa-2,5-dienone complex with triphenylphosphine was developed.