Microwave assisted synthesis of fragrant jasmone heterocyclic analogues.

cis-Jasmone, from jasmonoid group, is an important jasmine odor fragrance compound. The syntheses of new heterocyclic analogues of jasmone were described. Five analogues of this compound were prepared under microwave irradiation and the results of the microwave assisted syntheses were compared with classical, thermally initiated reactions in solvent. Microwave reactions were carried out successfully, and reaction times were significantly reduced to a few minutes. Three of five obtained analogues, pyrrolidinone, oxazolidinone and thiazolidinone demonstrated an interesting, specific odor which was compared with floral, typical jasmine odor of jasmone.