Saleh TS, Abd El-Rahman NM, Elkateb AA, Shaker NO, Mahmoud NA, Gabal SA. Ultrasound promoted synthesis of some novel fused pyrans.
ULTRASONICS SONOCHEMISTRY 2012;
19:491-497. [PMID:
22119428 DOI:
10.1016/j.ultsonch.2011.10.008]
[Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Revised: 09/29/2011] [Accepted: 10/14/2011] [Indexed: 05/31/2023]
Abstract
Novel fused pyrans were synthesized from the reaction of the tetrahydropyran-4-one with arylidine malononitriles. Different fused pyran derivatives were obtained from the mentioned reaction depending on type of catalyst used and type of energy used. Reactions were carried out under silent and ultrasonic conditions. In general, it was found that sometimes ultrasound irradiations change the reaction path in comparing with silent condition. In addition to improvement in reaction times, the products were obtained in high yields and their structures were determined by elemental analyses, spectral data.
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