ChemInform Abstract: One Pot Four‐Component Reaction for the Efficient Synthesis of Spiro[indoline‐3, 4′‐pyrano[2, 3‐c]pyrazole]‐3′‐carboxylate Derivatives. Issue 4 (28th January 2014) - Pal, Suman; Khan, Md. Nasim; Karamthulla, Shaik; Abbas, Sk Jahir; Choudhury, Lokman H.