2',2'-dimesityl-1,1,3,3-tetramethyl-1,3-dihydrospiro[indene-2,3'-[1,2]oxasilirane]

2-diazo-1,1,3,3-tetramethylindene

(1,1,3,3-tetramethylinden-2-ylidene)hydrazine

1,1,3,4-四甲基-2-茚酮

1,1-dibromo-2,2,3,3-tetramethylcyclopropane