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硼酸与3,4-二氢嘧啶-2-硫酮的可调碳-碳和碳-硫交叉偶联

Tunable carbon-carbon and carbon-sulfur cross-coupling of boronic acids with 3,4-dihydropyrimidine-2-thiones.

作者信息

Lengar Alenka, Kappe C Oliver

机构信息

Institute of Chemistry, Karl-Franzens-University Graz, Heinrichstrasse 28, A-8010 Graz, Austria.

出版信息

Org Lett. 2004 Mar 4;6(5):771-4. doi: 10.1021/ol036496h.

DOI:10.1021/ol036496h
PMID:14986971
Abstract

Direct microwave-assisted Pd(0)-catalyzed/Cu(I)-mediated carbon-carbon cross-coupling of 3,4-dihydropyrimidine-2-thiones and boronic acids under Liebeskind-Srogl conditions leads to 2-aryl-1,4-dihydropyrimidines in moderate to high yield. In contrast, Cu(II)-mediated reaction of the same substrates leads to carbon-sulfur cross-coupling. [reaction: see text]

摘要

在利贝斯金德-施罗格条件下,直接通过微波辅助的钯(0)催化/铜(I)介导的3,4-二氢嘧啶-2-硫酮与硼酸的碳-碳交叉偶联反应,能以中等至高收率得到2-芳基-1,4-二氢嘧啶。相比之下,相同底物的铜(II)介导反应则导致碳-硫交叉偶联。[反应:见正文]

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