ChemInform Abstract: Synthetic Studies on Novel 1,4‐Dihydro‐2‐methylthio‐4,4,6‐trisubstituted Pyrimidine‐5‐carboxylic Acid Esters and Their Tautomers.

Abstract

Title compounds (V) and (VI) are synthesized by Atwal—Biginelli cyclocondensation of oxoesters (III), obtained by the Lehnert procedure for the Knoevenagel‐type condensation with S‐methylisothiourea salt (IV).