%0 Journal Article %T An Efficient and Concise Synthesis of N-3-Substituted 9-Methoxy-4 H -[1]-benzopyrano[2,3- d ]pyrimidine-4(5 H)-imines and Formamidine Derivatives from Methyl N -(3-Cyano-8-methoxy-4 H -[1]-benzopyran-2-yl)methanimidate %+ Institut des Sciences Chimiques de Rennes (ISCR) %+ Synthèse Caractérisation Analyse de la Matière (ScanMAT) %A Bouattour, A. %A Fakhfakh, M. %A Abid, S. %A Paquin, L. %A Ammar, H. %A Bazureau, J.-P. %< avec comité de lecture %@ 0039-7881 %J Synthesis: Journal of Synthetic Organic Chemistry %I Georg Thieme Verlag %V 49 %N 16 %P 3768--3774 %8 2017-08 %D 2017 %R 10.1055/s-0036-1588825 %K (benzopyran-2-yl)methanimidate %K benzopyranopyrimidine-4-imine %K formamidine %K microwave irradiation %K solvent-free %Z Chemical SciencesJournal articles %X A four-step microwave-assisted reaction of N-3-susbstituted 4 H -[1]-benzopyrano[2,3- d ]pyrimidine-4(5 H)-imines and formamidine derivatives was successfully developed from primary amines, cyclic secondary amines, and methyl N -(3-cyano-8-methoxy-4 H -[1]-benzopyran-2-yl)methanimidate as key intermediate. The simplicity of the microwave protocols gave facile possibilities of isolation of the desired products by simple filtration. The synthesized compounds were obtained in good yields and purity, and characterized by 1 H, 13 C NMR, IR, and HRMS analyses. © Georg Thieme Verlag Stuttgart - New York. %G English %L hal-01581228 %U https://univ-rennes.hal.science/hal-01581228 %~ UNIV-RENNES1 %~ CNRS %~ INSA-RENNES %~ ENSC-RENNES %~ ISCR %~ SCR_ICMV %~ STATS-UR1 %~ UR1-SPM %~ INC-CNRS %~ UR1-UFR-SPM %~ UR1-HAL %~ ISCR-CORINT %~ UR1-SDLM %~ SCANMAT %~ TEST-UNIV-RENNES %~ TEST-UR-CSS %~ UNIV-RENNES %~ INSA-GROUPE %~ ISCR-CORINT2 %~ TEST-HALCNRS %~ UR1-MMS %~ TEST2-HALCNRS %~ TEST3-HALCNRS