Photochemical Myers-Saito and C2-C6 cyclizations of enyne-Allenes:: Direct detection of intermediates in solution

被引：27
|
作者：
Schmittel, M
Mahajan, AA
Bucher, G
机构：
[1] Univ Siegen, FB 8 Chem Biol, D-57068 Siegen, Germany
[2] Ruhr Univ Bochum, Lehrstuhl Organ Chem 2, D-44801 Bochum, Germany
来源：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2005年 / 127卷 / 15期
关键词：
D O I：
10.1021/ja044890k
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Several examples of the photochemical Myers-Saito and C2-C6 cyclization of enyne-allenes are described. The presence of a triplet sensitizing unit at the allene terminus and laser flash photolysis results suggest that the cyclization proceeds along the triplet manifold. An intermediate with τ = 33 ± 5 μs was tentatively assigned to a singlet biradical. Copyright © 2005 American Chemical Society.
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页码：5324 / 5325
页数：2
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