Journal
ORGANIC LETTERS
Volume 15, Issue 15, Pages 3856-3859Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ol401581p
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- NSFC [21072098]
- Program for New Century Excellent Talents in University
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In refluxing water and without an additional catalyst, electron-rich phenols could react with alkynoic acids or alkynoates to provide coumarin structures. The skeletons of two natural pyranocoumarins, 5-methoxyseselin and alloxanthoxyletin, could be constructed (total yield up to 76%) in an aqueous multicomponent reaction in which isoprenyl acetate, propiolic acid, and phloroglucinol were simply mixed and refluxed in water.
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