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 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
Hydroxy Furans. II. Beta Hydroxy Diphenylfuran
作者:E. P. Kohler、D. W. Woodward
DOI:10.1021/ja01301a028
日期:1936.10
Convenient Transformation of 3-Alkoxyfurans to 2-Alkoxy-3-furanones or cis-2-Alkoxy-2-butene-1,4-diones with Phenyltrimethylammonium Tribromide
作者:Shinsei Sayama
DOI:10.3987/com-05-10366
日期:——
3-Alkoxy-2,5-diphenylfurans and 3-alkoxy-2,4,5-triphenylfurans were converted to 2-alkoxy-3-furanones with phenyltrimethylammonium tribromides(PTAB) in various alcohols at room temperature. The oxidative ring-opening of 3-alkoxy-2,5-diphenylfurans to cis-2-alkoxy-2-butene-1,4-diones was also accomplished with PTAB in DMSO.