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有机化学
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有机化学 ›› 1998, Vol. 18 ›› Issue (4): 356-359. 上一篇    下一篇

研究论文

1, 4-取代-2-丁炔共二聚反应中溶剂效应和盐效应对反应选择性的影响

江焕峰;贾兰齐;冯爱群;谈燮峰;萧树德   

  1. 中国科学院广州化学研究所
  • 发布日期:1998-08-25

Solvent and salt effect on the selectivity of codimerization of 1, 4-substituted-2-butyne with allyl chloride

JIANG HUANFENG;JIA LANQI;ENG AIQUN;TAN XIEFENG;XIAO SHUDE   

  • Published:1998-08-25

PdCl~2(PhCN)~2催化的1, 4-取代-2-丁炔与烯丙基氯的共二聚反应中, 考察了不同的溶剂、不同的盐组分对生成双键的顺反异构体的影响。实验结果发现, 1, 4-二氯-2-丁炔与烯丙基氯的反应中, 不加溶剂和氯化物, 产物的双键以E式为主, 加入溶剂和氯化物, 产物以Z式为主。

关键词: 二聚作用, 氯代丙烯, 盐效应, 中国科学院青年科学基金, 共聚, 丁炔 P, 立体选择性, 反应选择性, 异构体, 溶剂效应

The codimerization of 1, 4-dichloro-2-butyne (1a), 2-butyn-1, 4-diol(1b) and 2-butyn-1, 4-diacetate (1c) with allyl chloride (2) in the presence of PdCl~2(PhCN)~2 gave 1,4-hexadiene derivative (3) and the effect different solvents and salts on the selectivity of C=C bond was discussed. The experimental results showed Z- or E- isomer of product (3) might be controlled according to different reaction conditions. Z-isomer was obtained selectively as solvent and halide were added, otherwise E-isomer was got as main isomer.

Key words: DIMERIZATION, SALT EFFECT, CHLOROPROPENES, REACTION SELECTIVITY, STEREOSELECTIVITY, BUTYNE P, SOLVENT EFFECT, ISOMER, COPOLYMERIZATION

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