Radical promoted cyclizations of aromatic carbonyl compounds to benzopyrans using titanocene(III) chloride

被引：19

作者：

Jana, Sarnaresh ^{[1
]}

Roy, Subhas Chandra ^{[1
]}

机构：

[1] Indian Assoc Cultivat Sci, Dept Organ Chem, Kolkata 700032, W Bengal, India

来源：

TETRAHEDRON LETTERS | 2006年 / 47卷 / 33期

关键词：

radical cyclization; aromatic carbonyls; titanocene(III) chloride; benzopyrans;

D O I：

10.1016/j.tetlet.2006.06.064

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Aromatic carbonyl compounds undergo smooth intramolecular radical cyclization with alkenes or alkynes using titanocene(Ill) chloride to furnish the corresponding benzopyrans. The radical initiator, Cp2TiCl, was prepared in situ from commercially available titanocene dichloride (Cp2TiCl2) and zinc dust in THF under argon. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：5949 / 5951

页数：3

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