Diisopropyl azodicarboxylate mediated selective dehydrogenation of 2-amino-3-cyano 4H-chromenes |
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| Authors: | Himanshu Sharma Mohini Mourya Debanjan Guin Yogesh C. Joshi Mahabeer P. Dobhal Ashok K. Basak |
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| Affiliation: | 1. Department of Chemistry, University of Rajasthan, JLN Marg, Jaipur 302004, India;2. Suresh Gyan Vihar University, Jagatpura, Jaipur 302025, India |
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| Abstract: | Selective dehydrogenation of 2-amino-3-cyano 4H-chromenes to the corresponding 2-iminochromenes mediated by diisopropyl azodicarboxylate under neutral conditions is reported. The dehydrogenation reaction is compatible with phenolic hydroxyl group and generates iminochromene in high yields. The methodology provides an easy access to coumarin and N-tosyl 2-amino-3-cyano-4-aryl 4H-chromenes. |
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| Keywords: | Diisopropyl azodicarboxylate 2-Iminochromene Selective dehydrogenation |
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