化学学报 ›› 1990, Vol. 48 ›› Issue (11): 1136-1140. 上一篇    下一篇

研究论文

稀土氯化物催化的Diels-Alder反应

廖世健;余淑文;陈之宇;余道容;姜淑芳;沈琪   

  1. 中国科学院大连化学物理研究所;中国科学院长长应用化学研究所
  • 发布日期:1990-11-15

Diels-Alder reaction catalyzed by rare earth chlorides

LIAO SHIJIAN;YU SHUWEN;CHEN ZHIYU;YU DAORONG;JIANG SHUFANG;SHEN QI   

  • Published:1990-11-15

本文提出以稀土氯化物作催化剂, 催化等摩尔比的丙烯醛和乙烯基丁醚进行环加成反应, 生成α-丁氧基-3,4-二氢-2H-吡喃, 实验表明, 环加成产物是不稳定的中间物, 它可以进一步开环聚合构成一个催化的连串反应, 找到了稳定中间物的反应条件, 以90-95%产率得到环加成产物。

关键词: 丁烯 P, 丁氧基, 丙烯醛, 氯化物, 醚, 二氢化物, 乙烯 P, 杀菌剂, 铕化合物, 环加成反应

Rare earth chlorides were used to catalyze the synthesis of 2-butoxy-3, 4-dihydro-2H-pyran (I) using equimolar acrolein and vinyl Bu ether. The cycloadduct is unstable which undergoes catalytic ring opening oligomerization. The way to stabilize the cyclo adduct has been studied, thus high yields of 90-95% were obtained.

Key words: BUTENE P, BUTOXY GROUP, PROPENAL, CHLORIDE, ETHER, DIHYDRO-COMPOUNDS, ETHYLENE P, BACTERICIDAL AGENTS, EUROPIUM COMPOUNDS, CYCLOADDITION REACTION

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