Chemoselective sulfoxidation by H2O2 or HNO3 using a phosphate impregnated titania catalyst

被引：17

作者：

Bharadwaj, Saitanya K. ^{[1
]}

Sharma, Susanda N. ^{[1
]}

Hussain, Sahid ^{[1
]}

Chaudhuri, Mihir K. ^{[1
,2
]}

机构：

[1] Indian Inst Technol Guwahati, Dept Chem, Gauhati 781039, India

[2] Tezpur Univ, Tezpur 784028, India

来源：

TETRAHEDRON LETTERS | 2009年 / 50卷 / 27期

关键词：

Heterogeneous catalysis; Chemoselective sulfoxidation; Hydrogen peroxide; Nitric acid; SELECTIVE OXIDATION; HYDROGEN-PEROXIDE; HETEROGENEOUS CATALYST; SULFIDES; COMPLEXES; EFFICIENT; MILD; LIGAND; GREEN; ACID;

D O I：

10.1016/j.tetlet.2009.03.106

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A variety of organosulfur compounds have been selectively oxidized to the corresponding sulfoxides by either H2O2 or HNO3 using a newly developed solid acid catalyst composed of 84.5% of TiO2 and 15.5% of [Ti4H11(PO4)(9)]center dot nH(2)O (n = 1-4). The chemoselective oxidation of sulfides in the presence of vulnerable groups such as -CN, -C = C-, -CHO, or -OH, as well as sulfoxidation of substrates like benzothiazole, glycosyl Sulfide, and dibenzothiophenes is some of the important attribute-cif the protocol. Nitric acid, under the present experimental conditions, brings about relatively better selectivity than hydrogen peroxide. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：3767 / 3771

页数：5

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