Title of article :
Carbon–SO3H: a novel and recyclable solid acid catalyst for the synthesis of spiro[4H-pyran-3,3′-oxindoles]
Author/Authors :
Maheshwar Rao، نويسنده , , B. and Reddy، نويسنده , , G. Niranjan and Reddy، نويسنده , , T. Vijaikumar and Devi، نويسنده , , B.L.A. Prabhavathi and Prasad، نويسنده , , R.B.N. and Yadav، نويسنده , , J.S. and Reddy، نويسنده , , B.V. Subba، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2013
Abstract :
A bioglycerol derived carbon-sulfonic acid is found to catalyze efficiently the three-component one-pot condensation of isatin, malononitrile, and 1,3-dicarbonyls to afford a wide range of spiro[4H-pyran-3,3′-oxindole]derivatives in good yields and selectivity. The use of a recyclable solid acid catalyst makes this method simple, convenient, and cost-effective.
Keywords :
Domino reaction , Solid acid catalysis , 1 , 3-dicarbonyls , Malononitrile , Isatins , Spirooxindoles
Journal title :
Tetrahedron Letters
Journal title :
Tetrahedron Letters
