A rapid, one-pot, microwave-influenced synthesis of spiro-2,5-diketopiperazines via a cascade Ugi/6-exo-trig aza-Michael reaction

J Org Chem. 2011 Apr 1;76(7):2261-4. doi: 10.1021/jo102305q. Epub 2011 Feb 25.

Abstract

A rapid, cascade reaction process has been developed to access biologically validated spiro-2,5-diketopiperazines. The facile and environmentally benign method capitalizes on commercially available starting reagents for a sequential Ugi/6-exo-trig aza-Michael reaction, water as a solvent, and microwave irradiation without any extraneous additives.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Catalysis
  • Crystallography, X-Ray
  • Diketopiperazines / chemical synthesis*
  • Diketopiperazines / chemistry
  • Indicators and Reagents / chemistry
  • Microwaves
  • Models, Molecular
  • Molecular Structure
  • Solvents / chemistry
  • Spiro Compounds / chemical synthesis*
  • Spiro Compounds / chemistry
  • Stereoisomerism
  • Water / chemistry

Substances

  • Diketopiperazines
  • Indicators and Reagents
  • Solvents
  • Spiro Compounds
  • Water