Molecular iodine: An efficient and environment friendly catalyst for the synthesis of 3,5-bis-(arylmethylidene)-tetrahydropyran-4-ones

A rapid, efficient, convenient and cost-effective procedure has been developed for the synthesis of 3,5-bis-(arylmethylidene)-tetrahydropyran-4-ones by the condensation of tetrahydropyran-4-one with araldehydes in the presence of catalytic amount of iodine to obtain the products in good to excellent yield. The reactions work at 25°C and go to completion within 30-60min. Copyright © 2010 Taylor and Francis Group, LLC