Silver-Catalyzed Regioselective Phosphorylation of para-Quinone Methides with P(III)-Nucleophiles

J Org Chem. 2021 Nov 5;86(21):14983-15003. doi: 10.1021/acs.joc.1c01703. Epub 2021 Oct 19.

Abstract

A simple and efficient method for the silver-catalyzed regioselective phosphorylation of para-quinone methides (p-QMs) with P(III)-nucleophiles (P(OR)3, ArP(OR)2, Ar2P-OR) has been established via Michaelis-Arbuzov-type reaction. A broad range of P(III)-nucleophiles and para-quinone methides are well tolerated under the mild conditions, giving the expected diarylmethyl-substituted organophosphorus compounds with good to excellent yields. Moreover, a series of corresponding enantiomers can be obtained by employing dialkyl arylphosphonite (ArP(OR)2) as substrates. The control experiments and 31P NMR tracking experiments were also performed to gain insights for the plausible reaction mechanism. This protocol may have significant implications for the formation of C(sp3)-P bonds in Michaelis-Arbuzov-type reactions.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Catalysis
  • Indolequinones*
  • Phosphorylation
  • Silver*

Substances

  • Indolequinones
  • quinone methide
  • Silver