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钯/对甲苯磺酸催化烯丙基苯异构化合成β-甲基苯乙烯衍生物的方法研究

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Indexed by: Journal Article

Date of Publication: 2017-05-25

Journal: 有机化学

Included Journals: CSCD、SCIE

Volume: 37

Issue: 5

Page Number: 1278-1283

ISSN: 0253-2786

Key Words: 异构化;烯丙基苯;β-甲基苯乙烯;钯催化

Abstract: 发展了简便、高效地烯丙基苯异构化制备β-甲基苯乙烯的合成方法.通过对不同的酸、溶剂和催化剂的考察,确定了最优反应条件;三氟乙酸钯和对甲苯磺酸为催化剂、二氯甲烷为溶剂、空气条件下室温反应12 h.在最优条件下对底物适用范围进行考察,含有给电子基和吸电子基的烯丙基苯均可以有效地得到β-甲基苯乙烯产物,反应收率在65%~90%之间.根据氘代实验的结果对反应机理进行了推测.

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