Article ID Journal Published Year Pages File Type
5224937 Tetrahedron 2009 5 Pages PDF
Abstract

A simple and efficient cyclocondensation reaction of 2,6-diaminopyrimidin-4(3H)-one and isatins for the synthesis of spiro[pyrimido[4,5-b]quinoline-5,5′-pyrrolo[2,3-d]pyrimidine] and spiro[indoline-pyrido[2,3-d:6,5-d′]dipyrimidine] derivatives is reported.

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Physical Sciences and Engineering Chemistry Organic Chemistry
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