化学学报 ›› 1990, Vol. 48 ›› Issue (6): 622-626. 上一篇    

研究论文

季铵碱树脂催化的β-酮砜的α-碳烷基化反应研究

任启生;黄文强;陆宇;尹耀荣;何炳林   

  1. 南开大学高分子化学研究所
  • 发布日期:1990-06-15

Study on the alkylation of α-carbon of β-ketosulfone catalyzed by quaternary ammonium base resin

REN QISHENG;HUANG WENQIANG;LU YU;YIN YAORONG;HE BINGLIN   

  • Published:1990-06-15

本文以季铵碱树脂作为聚合物固载的相转移催化剂, 在50%氢氧化钠水溶液中催化α-苯磺酰基苯乙酮(1)的α-亚甲基的烷基化反应。发现在三相催化剂存在下, 化合物1的烷基化产物与烷基化剂卤代烃的活性和反应温度有关。在非质子化溶剂HMPA存在下,50℃时发现了化合物1的α-碳和O-双烷基化的烯醇醚产物。但在100℃时只得到化合物1的分解产物苯基甲基砜而非烷基化产物。

关键词: 砜, 甲叉, 红外分光光度法, 苯, 核磁共振谱法, 烷基化, 苯乙酮 P, 相转移催化剂, 磺酰基, 树脂

The alkylation of a-methylene of PhSO2CH2COPh (I) with alkyl halides catalyzed by quaternary ammonium base resin in 50% aqueous sodium hydroxide solution was investigated. In the presence of triphase catalyst, the alkylation products of I depended closely on the reactivity of alkyl halides and reaction temperature The a-carbon and O-dialkylation product was found when aprotic solvent HMPA was present at 50癈. No alkylation product but the decomposition product of I was obtained at 100?

Key words: SULFONE, METHYLENE, INFRARED SPECTROPHOTOMETRY, BENZENE, NMR SPECTROMETRY, ALKYLATION, ACETOPHENONE P, PHASE TRANSFER CATALYST, SULFONYL GROUP, RESIN

中图分类号: