Tetrahedron Letters

Solvent-free sonochemical one-pot three-component synthesis of 2H-indazolo [2, 1-b] phthalazine-1, 6, 11-triones and 1H-pyrazolo [1, 2-b] phthalazine-5, 10-diones

G Shukla, RK Verma, GK Verma, MS Singh

文献索引：Shukla, Gaurav; Verma, Rajiv K.; Verma, Girijesh K.; Singh, Maya Shankar Tetrahedron Letters, 2011 , vol. 52, # 52 p. 7195 - 7198

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被引用次数: 48

摘要

A rapid and efficient one-pot three-component protocol for the synthesis of 2H-indazolo [2, 1- b] phthalazine-1, 6, 11-triones 4 and 1H-pyrazolo [1, 2-b] phthalazine-5, 10-diones 6 has been developed by domino coupling of phthalhydrazide, 1, 3-diketones, and aldehydes under solvent-free conditions at 80° C as well as under solvent-free ultrasound irradiation at room temperature promoted by (S)-camphorsulfonic acid.