Solid-Phase Synthesis of 3,4-Dihydro-1H-pyrimidine-2-ones Using Sodium Benzenesulfinate as a Traceless Linker

Abstract

The facile preparation of 3,4-dihydropyrimidine-2-one derivatives with traceless solid-phase sulfone linker strategy is described. Key steps involved in the solid-phase synthetic procedure include (i) sulfinate acidification, (ii) condensation of urea or thiourea with aldehydes and sulfinic acid, and (iii) traceless product release via a one-pot cyclization-dehydration process. A library of 18 compounds was synthesized.