A variety of chroman-4-ones bearing phosphine oxide motifs were conveniently synthesized from readily available diphenylphosphine oxide and alkenyl aldehydes via a metal-free tandem phosphinoylation/cyclization protocol. The reaction utilizes K2S2O8 as oxidant and proceeds in DMSO-H2O at environmentally benign conditions with broad substrate scope and afforded the title compounds in moderate yields.
Keywords: chroman-4-ones; diphenylphosphine oxide; potassium persulfate; metal-free; radical cyclization
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When a peer-reviewed version of this preprint is available in the Beilstein Journals, this information will be updated in the information box above. If no peer-reviewed version is available, please cite this preprint using the following information:
Liu, Q.; Lu, W.; Xie, G.; Wang, X. Beilstein Arch. 2020, 202071. doi:10.3762/bxiv.2020.71.v1
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