Abstract
The 1,3-dipolar cycloaddition of azomethine ylide, generated in situ from isatin and sarcosine, to 5-arylmethylidene-1-phenyl-6,7-dihydro-1H-indazol-4(5H)-ones afforded novel 1′-methyl-4′-aryl-1-phenyl-6,7-dihydrodispiro[indazole-5,3′-pyrrolidine-2′,3″-indole]-2″,4(1H,1″ H)-diones in moderate yields. The structures of all the products were characterised thoroughly by NMR, IR, HRMS, together with X-ray crystallographic analysis.
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