【摘 要】
：
Novel spiro[dibenzo[a,i]xanthene-14,3’-indoline]-2’,8,13-triones were prepared by the three-component reaction ofβ-naphthol, isatins,and 2-hydroxy-1,4-naphoq
【出 处】
：
Chinese Chemical Letters
论文部分内容阅读
Novel spiro[dibenzo[a,i]xanthene-14,3’-indoline]-2’,8,13-triones were prepared by the three-component reaction ofβ-naphthol, isatins,and 2-hydroxy-1,4-naphoquinone in the presence of a catalytic amount of H_4SiW_(12)O_(40).This protocol provides a simple one-step procedure with the advantages of easy work-up,mild reaction conditions and environmentally benign.
Novel spiro [dibenzo [a, i] xanthene-14,3’-indoline] -2 ’, 8,13-triones were prepared by the three-component reaction of β- naphthol, isatins, and 2-hydroxy- naphoquinone in the presence of a catalytic amount of H_4SiW_ (12) O_ (40). This protocol provides a simple one-step procedure with the advantages of easy work-up, mild reaction conditions and environmentally benign.
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