Extended pi-participation in biomimetic cyclization of squalene derivatives

被引：0

作者：

Borcic, S ^{[1
]}

Humski, K ^{[1
]}

Kronja, O ^{[1
]}

Malnar, I ^{[1
]}

机构：

[1] UNIV ZAGREB,DEPT CHEM,FAC PHARM & BIOCHEM,ZAGREB 10000,CROATIA

来源：

CROATICA CHEMICA ACTA | 1996年 / 69卷 / 04期

关键词：

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Chlorides 4(1-aryl-1-chloro-5,9,14,18,22-pentamethyl-5,9,13,17,21-tricosapentaenes) with various phenyl substituents were prepared, and solvolysis rates were measured in aqueous ethanol (phi = 95% and 80%) and in aqueous 2,2,2-trifluoroethanol (omega = 97%). Hammett rho(+) values obtained are -1.86, -1.81 and -1.56, respectively, suggesting concerted cyclization of at least two double bonds in the rate determining step.

引用

页码：1347 / 1359

页数：13

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