在微波辐射下已经建立了三组分[3 + 3]杂环,为双环稠合吡啶提供了灵活的合成方法。3,5-二苄基二氢-2 H-吡喃-4(3 H)-酮与丙二腈和芳香胺在HOAc和N,N-二甲基甲酰胺的共溶剂中共存,提供了10个吡喃并[4,3- b ]吡啶衍生物实例高产到高产。同样,使用硫拴系杂环作为反应伙伴,获得了七个硫吡喃并[4,3- b ]吡啶衍生物的实例。
Molecular Iodine: An Efficient and Environment Friendly Catalyst for the Synthesis of 3,5-<i>Bis</i>-(arylmethylidene)-tetrahydropyran-4-ones
作者:M. B. Madhusdana Reddy、Aatika Nizam、M. A. Pasha
DOI:10.1080/00397910903531748
日期:2010.11.16
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 degrees C and go to completion within 30-60min.