Methylenepyran unsaturated Fischer carbene complexes from γ-methylpyrylium salts and alkynylcarbenes. Evolution to spiro-pyran-cyclopentenone compounds

被引：5

作者：

Ba, Fatou ^{[1
]}

Le Poul, Pascal ^{[1
]}

Robin-Le Guen, Francoise ^{[1
]}

Cabon, Nolwenn ^{[1
]}

Caro, Bertrand ^{[1
]}

机构：

[1] IUT Lannion, CNRS, Sci Chim Rennes UMR 6226, Lannion, France

来源：

TETRAHEDRON LETTERS | 2010年 / 51卷 / 04期

关键词：

Push-pull molecules; Methylenepyrans; Fischer alkynylcarbenes complexes; Spiro-fused-pyran-cyclopentenenone; TRANSITION-METAL-COMPLEXES; PYRYLIUM-SALTS; ORGANIC SYNTHESES; TUNGSTEN COMPLEXES; TRIPLE BOND; CHROMIUM; REACTIVITY; HETEROCYCLES; DIMERIZATION; CHEMISTRY;

D O I：

10.1016/j.tetlet.2009.11.072

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Push-pull methylenepyran compounds 3 containing ferrocenyl or aryl groups are synthesized from reaction of condensation between gamma-methyl-pyrylium salts 1 as precursors of gamma-methylenepyrans and alkynylcarbene complexes 2 as Michael-type acceptors. The new carbenes 3 evolve in CH2Cl2 Solution at room temperature to provide spiro-fused-pyran-cyclopenten e none 4 and polysubstituted cyclopentenones 5. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：605 / 608

页数：4

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