2,2,4-三甲基-1,2-二氢喹啉

2,2,6,6-tetramethyl-1-phenylphosphinan-4-one

3,3-二甲基-2,3-二氢-1H-茚-1-酮

2,2,5,5-四甲基-3-吡咯啉-3-氨甲酰胺

2,2,6,6-tetramethyl-1-phenyl-1-sulfanylidene-1λ⁵-phosphinan-4-one