5-Methyl-6-phenyl-2-thioxothieno [2, 3-d] pyrimidone derivative (2) reacted with hydrazonoyl
chloride derivatives to afford triazolothienopyrimidones 4a–f. Also, acetone--1-(2-amino-5 …

Abstract Synthesis of 4-(3, 5-dimethyl-1H-pyrazol-1-yl)-5, 6, 7, 8-tetrahydrobenzo [4, 5]
thieno [2, 3-d] pyrimidine 1 and its functionalized reactions as nucleophile with various …

Reaction of heteroaromatic o-aminonitrile with ethyl N--[bis (methylthio) methylene] amino
acetate resulted in annelation of a thieno [3, 2-e] imidazo [1, 2-c] pyrimidine moiety in a one …

The work involves synthesis of novel Schiff base derivatives containing a pyrimidine unit
starting with chalcones. 4-Aminoacetophenone was reacted with 4-nitrobenzaldehyde or 4 …

5‐Amino‐2‐(p‐tolylamino)‐4‐phenylthieno [2, 3‐d] pyrimidine‐6‐carbonitrile 9, which was
synthesized by an innovative method, was used as a versatile precursor for synthesizing …

Herein, a rapid and highly efficient method for the synthesis of a new series of pyrimidine
derivatives was demonstrated. The strategy was emanated from the reaction of hydrazinyl …

Derivatives of a novel heterocyclic system ethyl 2-(2-(aryl)-9-(aryl) imidazo [1, 2-c] thieno [3,
2-e] pyrimidin-3-yl) acetate have been obtained by successive reactions in four stages; …

Herein, an efficient method for the synthesis of a new series of pyrido [2, 3‐d] pyrimidine
derivatives has been adopted through the reaction of hydrazinyl pyrido [2, 3‐d] pyrimidine …

A multicomponent reaction between ethyl 3-aminocrotonate, phenyl isothiocyanates, 2, 2-
dichloroacetyl chloride and to give 6-thioxo-1, 6-dihydropyrimidine-5-carboxylate. This one …

Two Schiff base compounds with similar backbone, but different positions and lengths of
alkyl groups,(E)-4-(((4-propylphenyl) imino) methyl) phenol (PMP) and (E)-4-((2-tolylimino) …