A one-pot synthesis of bis(phenylimino)thiazolidines from ketene N,S-acetals and [Formula: see text],[Formula: see text]-diphenyloxalimidoyl dichloride

Mol Divers. 2018 Feb;22(1):11-19. doi: 10.1007/s11030-017-9783-2. Epub 2017 Sep 21.

Abstract

A synthesis of functionalized 4,5-bis(phenylimino)-1,3-thiazolidine-2-ylidenes via a simple reaction between ketene [Formula: see text]-acetals (derived from isothiocyanates and acetonitrile derivatives) with N,[Formula: see text]-diphenyloxalimidoyl dichloride in the presence of KOH in DMF is described. When CS[Formula: see text] was used as the heterocumulene component, the reaction led to the formation of 4,5-bis(phenylimino)-1,3-dithiolan-2-ylidene derivatives, in moderate to good yields.

Keywords: Heterocyclic synthesis; Ketene acetals; Push–pull olefins; Thiazolidine.

MeSH terms

  • Acetals / chemistry*
  • Chemistry Techniques, Synthetic*
  • Ethylenes / chemistry*
  • Ketones / chemistry*
  • Magnetic Resonance Spectroscopy
  • Models, Molecular
  • Molecular Structure
  • Thiazolidines / chemical synthesis*

Substances

  • Acetals
  • Ethylenes
  • Ketones
  • Thiazolidines
  • ketene