An efficient one-pot synthesis of pyrimido[2,1-b][1,3]oxazine derivatives via the reaction of isocyanides with dialkyl acetylenedicarboxylates in the presence of 5-substituted uracils
作者:Robabeh Baharfar、Seyed Meysam Baghbanian
DOI:10.1002/jhet.863
日期:2012.3
The reactive 1:1 intermediate produced in the reaction between alkyl isocyanides and dialkylacetylenedicarboxylates was trapped by uracil and its 5‐substituted derivatives to yield highly functionalized pyrimido[2,1‐b][1,3]oxazinederivatives in fairly good yields. J. Heterocyclic Chem.,(2011).