Microwave assisted synthesis of some tetrahydropyrimidinethione, thiazolo [3,2-a] pyrimidinone and xanthenedione derivatives

الملخص EN

A number of 1, 2, 3, 4-tetrahydropyrimidine-2-thiones 2a-d, have been synthesized using microwave irradiation in an appreciable yield.

Cyclisation of 2a-c with different reagents gave the thiazolopyrimidinone derivatives 3-5.

Reaction of dimedone with aromatic aldehydes and thiourea using microwave irradiation afforded the xanthenedione 8a, b as a major product.

The prepared compounds were fully identified by spectroscopic methods.