Oxidative Conversion of 3‐Alkoxyfurans to 2‐Hydroxy‐3(2<i>H</i>)‐furanones and 2‐Hydroxy‐2‐butene‐1,4‐diones with 2,3‐Dichloro‐5,6‐dicyano‐1,4‐benzoquinone (DDQ) or Phenyltrimethylammonium Tribromide (PTAB) in <i>t</i>‐BuOH
作者:Shinsei Sayama
DOI:10.1080/00397910701543036
日期:2007.9.1
Abstract 2‐Alkoxy‐1,3,4‐triphenylfurans were oxidized to 3‐alkoxy‐2,4,5‐triphenyl‐ 2‐butene‐1,4‐diones with 2,3‐dichloro‐5,6‐dicyano‐1,4‐benzoquinone (DDQ) in t‐BuOH. In contrast, various 3‐alkoxy‐2,4,5‐triphenylfurans were directly converted to 2‐hydroxy‐3(2H)‐furanone with phenyltrimethylammonium tribromide (PTAB) in t‐BuOH. The oxidative ring opening of 3‐alkoxy‐2,5‐diphenylfurans to cis‐2‐hydroxy‐2‐butene‐1
The Action of Alcoholic Hydrogen Halides on the Monohalo cis- and trans-Dibenzoylethylenes<sup>1</sup>
作者:Robert E. Lutz、Millard G. Reese
DOI:10.1021/ja01510a028
日期:1959.1
The Tautomerism of 1,4-Diphenylbutane-1,2,4-trione Enol
作者:Robert E. Lutz、F. N. Wilder、C. I. Parrish
DOI:10.1021/ja01324a043
日期:1934.9
Further Studies on 1,4-Diphenyl-1,2,4-butanetrione Enol, Including Alkylation and Benzoylation
作者:Robert E. Lutz、Alfred H. Stuart
DOI:10.1021/ja01301a017
日期:1936.10
Oxidation of Furans with 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone(DDQ)
作者:Shinsei Sayama、Yutaka Inamura
DOI:10.3987/com-96-7456
日期:——
2,5-Disubstituted furans were oxidatively cleaved to 2-butene-1,4-diones with DDQ in CH2Cl2-DMSO. In particular, 3-alkoxy-2,5-diphenylfurans were selectively converted into cis-2-alkoxy-1,4-diphenyl-2-butene-1,4-diones with DDQ in CH2Cl2.