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A new and operationally modest one-step C-C and C-O bond construction reaction is developed under sonochemical method. The reaction is achieved with easily accessible 8-hydroxy quinoline as starting material in the presence of sulfated tin oxide (SO 4−2 /SnO 2 ) catalyst. The ultrasonic irradiation with heterogeneous catalyst has been established to be a useful technique for the multicomponent synthesis of target compounds.

Ultrasound Promoted Synthesis of 2-Amino-4-H-Pyranoquinolines Using Sulphated Tin Oxide as a Catalyst