title: A catalyst-free one-pot construction of skeletons of 5-methoxyseselin and alloxanthoxyletin in water.
abstract: 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.
authors.affiliation: The State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, PR China.
authors.forename: Jin-Li
authors.initials: JL
authors.lastname: Cao
authors.forename: Su-Li
authors.initials: SL
authors.lastname: Shen
authors.forename: Peng
authors.initials: P
authors.lastname: Yang
authors.forename: Jin
authors.initials: J
authors.lastname: Qu