Catalytic oxidation of catechins to p-benzoquinones with hydrogen peroxide/methyltrioxorhenium

被引：19

作者：

Bernini, R

Mincione, E

Provenzano, G

Fabrizi, G

机构：

[1] Univ Tuscia, Dipartimento ABAC, I-01100 Viterbo, Italy

[2] Consorzio Interuniv Chim Ambiente, Unita Ric VT2, I-30175 Marghera, VE, Italy

[3] Univ Roma La Sapienza, Dipartimento Chim & Tecnol Sostanze Biologicament, I-00185 Rome, Italy

来源：

TETRAHEDRON LETTERS | 2005年 / 46卷 / 17期

关键词：

hydrogen peroxide/methyltrioxorhenium; catalytic oxidations; catechins; p-benzoquinones; winery by-products; renewable sources; agroindustrial wastes;

D O I：

10.1016/j.tetlet.2005.03.032

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

New p-benzoquinones were obtained by oxidation of catechin and epicatechin derivatives with the hydrogen peroxide/methyltrioxorhenium catalytic system. Reactions were carried out both in homogeneous and heterogeneous conditions and proceeded with high conversion and moderate yields. Polymer-supported methyltrioxorhenium systems were used as heterogeneous catalysts. After the first oxidation, the catalytic systems can be recovered and reused for five consecutive times without loss of stability and efficiency. (c) 2005 Elsevier Ltd. All rights reserved.

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页码：2993 / 2996

页数：4

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