Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 82, Issue 6, Pages 2926-2934Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.joc.6b02890
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Funding
- Department of Science and Technology (DST)
- India for Fast track [SB/FT/CS-055/2012]
- CSIR, New Delhi as part of XII Five Year plan under title ORIGIN [CSC-0108]
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Intermolecular tandem copper-catalyzed O-arylation-oxidative acylation (cross dehydrogenative coupling-CDC) has been developed under air as an oxidant. The reaction between 2,4-dihydro-3H-pyrazol-3-ones and ortho-halo aryl carboxaldehydes furnished the corresponding chromone fused pyrazoles, in a straightforward manner. The synthetic utility of the presented tandem catalysis has been demonstrated with the synthesis of an A(2)-subtype selective adenosine receptor antagonist in only two steps. [GRAPHICS]
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