| 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 |
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| 引用本文： | 江焕峰,贾兰齐,冯爱群,谈燮峰,萧树德.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[J].有机化学,1998,18(4):356-359. |
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| 作者姓名： | 江焕峰 贾兰齐 冯爱群 谈燮峰 萧树德 |
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| 作者单位： | 中国科学院广州化学研究所 |
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| 摘 要： | 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。
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| 关 键 词： | 共聚 反应选择性 溶剂效应 异构体 立体选择性 氯代丙烯 丁炔 P 二聚作用 盐效应 中国科学院青年科学基金 |
Solvent and salt effect on the selectivity of codimerization of 1, 4-substituted-2-butyne with allyl chloride |
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| Abstract: | 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. |
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| Keywords: | COPOLYMERIZATION REACTION SELECTIVITY SOLVENT EFFECT ISOMER STEREOSELECTIVITY CHLOROPROPENES BUTYNE P DIMERIZATION SALT EFFECT |
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