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Novel and efficient one-pot synthesis of spiro[indoline-3, 4'pyrano [2, 3-c]pyrazole]derivatives catalysed by L-proline in aqueous medium. (1st June 2013)
Record Type:
Journal Article
Title:
Novel and efficient one-pot synthesis of spiro[indoline-3, 4'pyrano [2, 3-c]pyrazole]derivatives catalysed by L-proline in aqueous medium. (1st June 2013)
Main Title:
Novel and efficient one-pot synthesis of spiro[indoline-3, 4'pyrano [2, 3-c]pyrazole]derivatives catalysed by L-proline in aqueous medium
An efficient mild one-pot synthesis of spiro[indoline-3, 4'-pyrano[2, 3-c]pyrazole derivatives by a four-component reaction of hydrazine, a β-keto ester, isatin, and malononitrile catalysed by L-proline in water is reported.