Himanshu Sharma, Mohini Mourya, D. Guin
May 3, 2017
Citations
0
Influential Citations
9
Citations
Journal
Tetrahedron Letters
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.