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π-烯丙基钯物种分子内亲核取代反应中区域选择性的反转。通过有机碘化物与2-(2',3'-二烯基)丙二酸酯的钯(0)催化偶联-环化反应高选择性地形成乙烯基环丙烷。

Reverse of regioselectivity in intramolecular nucleophilic substitution of pi-allyl palladium species. Highly selective formation of vinylic cyclopropanes via the Pd(0)-catalyzed coupling-cyclization reaction of organic iodides with 2-(2', 3'-Dienyl)malonates.

作者信息

Ma S, Zhao S

机构信息

Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, P. R. China.

出版信息

Org Lett. 2000 Aug 10;2(16):2495-7. doi: 10.1021/ol006165u.

DOI:10.1021/ol006165u
PMID:10956530
Abstract

Vinylic cyclopropanes were formed highly selectively via the Pd(PPh(3))(4)-catalyzed insertion-intramolecular nucleophilic substitution reaction of aryl or 1-alkenyl iodides with 2-(2', 3'-dienyl)malonates. The regioselectivity observed here is different from what was reported by Cazes et al.

摘要

通过钯(三苯基膦)₄催化芳基或1-烯基碘与2-(2',3'-二烯基)丙二酸酯的插入-分子内亲核取代反应,高度选择性地生成了乙烯基环丙烷。此处观察到的区域选择性与卡泽斯等人报道的不同。

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