An efficient,three‐component synthesis of spiro[benzo[g]chromene‐4,3′‐indoline]‐3‐carbonitrile and spiro[indoline‐3,5′‐pyrano[2,3‐d]pyrimidine]‐6′‐carbonitrile derivatives
1. Department of Chemistry, Shahid Beheshti University, G.C.Tehran 1983963113, Iran;2. Nanotechnology Research Center, Avicenna Research Institute, ACECR, Tehran, Iran