A facile synthesis of chromeno[4,3-b]pyrroles derived from allyl derivatives of Baylis–Hillman adducts through intramolecular 1,3-dipolar cycloaddition using ultrasonication
作者:Ekambaram Ramesh、Raghavachary Raghunathan
DOI:10.1016/j.tetlet.2007.12.066
日期:2008.2
Synthesis of a series of chromene[4,3-b]pyrroles has been accomplished through an intramolecular1,3-dipolarcycloaddition reaction of an azomethine ylide with the dipolarophile derivedfrom Baylis–Hillman adducts. Improved yields of the same products were obtained when the reaction was carried out under ultrasonication.
一系列亚甲基[4,3- b ]吡咯的合成是通过甲亚胺叶立德与衍生自Baylis-Hillman加合物的双极性亲核剂的分子内1,3-偶极环加成反应完成的。当反应在超声下进行时,获得相同产物的提高的产率。