乙酸酐 、
6'-Amino-3'-methyl-1'-phenyl-1'H-spiro[fluorene-9,4'-pyrano[2,3-c]pyrazole]-5'-carbonitrile 在
吡啶 作用下,
反应 12.0h,
以74%的产率得到6,12-Dimethyl-4-phenylspiro[2-oxa-4,5,11,13-tetrazatricyclo[7.4.0.03,7]trideca-1(9),3(7),5,12-tetraene-8,9'-fluorene]-10-one