Journal
ORGANIC LETTERS
Volume 23, Issue 17, Pages 6780-6783Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.1c02357
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Funding
- National Natural Science Foundation of China [21871293, 22071264]
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An efficient method using K2CO3 catalysis has been developed for the 1,4-addition/intramolecular cyclization/aromatization reaction of aurone-derived 1-azadienes with trisubstituted allenoates, resulting in a series of benzofuro[3,2-b]pyridines in moderate to excellent yields. The reaction proceeds efficiently under an air atmosphere without the need for transition metal catalysts, providing a concise approach to benzofuro[3,2-b]pyridines.
An efficient K2CO3-catalyzed 1,4-addition/intramolecular cyclization/aromatization reaction of aurone-derived 1-azadienes with trisubstituted allenoates has been developed, giving a series of benzofuro[3,2-b]pyridines in moderate to excellent yields. The reaction proceeded efficiently under an air atmosphere without the use of transition metal catalysts. This protocol provides a concise approach to benzofuro[3,2-b]pyridines.
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