4'-(1,3-dioxo-1,3-dihydro-2H-inden-2-ylidene)spiro[indene-2,3'-oxetane]-1,2',3-trione

1,3-indandione anion

苯甲酰氯

丙二酰氯

3-phenyliodonio-1,2,4-trioxo-1,2,3,4-tetrahydronaphthalenide