Metal-free synthesis of phosphinoylchroman-4-ones via phosphinoylation/cyclization cascade mediated by K2S2O8

  1. Qiang LiuORCID Logo,
  2. Weibang Lu,
  3. Guanqun Xie and
  4. Xiaoxia Wang

Submitting author affiliation: Dongguan University of Technology, Dongguan, China

Beilstein Arch. 2020, 202071.

Published 10 Jun 2020

  • Preprint


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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Liu, Q.; Lu, W.; Xie, G.; Wang, X. Beilstein Arch. 2020, 202071. doi:10.3762/bxiv.2020.71.v1

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