Iridium complex-catalyzed [2+2+2] cycloaddition of α,ω-diynes with monoalkynes:: a new and efficient catalyst for cyclotrimerization of alkynes

被引：73

作者：

Takeuchi, R

Tanaka, S

Nakaya, Y

机构：

[1] Yokohama City Univ, Fac Sci, Dept Environm Sci, Kanazawa Ku, Yokohama, Kanagawa 2360027, Japan

[2] Yokohama City Univ, Grad Sch Integrated Sci, Kanazawa Ku, Yokohama, Kanagawa 2360027, Japan

来源：

TETRAHEDRON LETTERS | 2001年 / 42卷 / 16期

关键词：

iridium and compounds; diynes; cycloadditions; metallacycles; alkynes;

D O I：

10.1016/S0040-4039(01)00338-0

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

[Ir(cod)Cl](2) combined with dppe was found to be a new and efficient catalyst for [2+2+2] cycloaddition. Dimethyl dipropargylmalonate reacted with 1-hexyne in the presence of a catalytic amount of [Ir(cod)C1](2) combined with dppe at room temperature in 20 min to give an indane derivative in 84% yield. Various functionalized monoalkynes can be used for this [2+2+2] cycloaddition. (C) 2001 Elsevier Science Ltd. All rights reserved.

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页码：2991 / 2994

页数：4

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