A new reagent system for installation of an aryl group onto the monoacetate of 4-cyclopentene-1,3-diol

被引:20
作者
Ainai, T [1 ]
Ito, M [1 ]
Kobayashi, Y [1 ]
机构
[1] Tokyo Inst Technol, Dept Biomol Engn, Midori Ku, Yokohama, Kanagawa 2268501, Japan
关键词
coupling reaction; 4-cyclopentene-1,3-diol monoacetate; Grignard reagent; copper catalyst; dihydromultifidene;
D O I
10.1016/S0040-4039(03)00777-9
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Among the three types of reagents from PhMgX (X=Br, Cl) and CuCN for phenylation of 4-cyclopentene-1,3-diol monoacetate, PhMgCl/CuCN (cat.) and Ph2Cu(CN)(MgCl)(2) in THF afforded the trans- 1,4-isomer efficiently (82-87% yields, 91-93% regioselectivity). Similarly, o- and p-RC6H4MgCl (R = Me, OMe, CH2=CH) in combination with CuCN furnished good to excellent reactivity and regioselectivity. As an application, a three-step synthesis of dihydromultifidene was accomplished successfully. (C) 2003 Elsevier Science Ltd. All rights reserved.
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页码:3983 / 3986
页数:4
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