4-benzhydrylidene-1-(4-methylphenyl)sulfonylpiperidine

1-(toluene-4-sulfonyl)-piperidine-4-carboxylic acid ethyl ester

[1-(4-methylphenyl)sulfonylpiperidin-4-yl]-phenylmethanone

4-哌啶甲酸乙酯

对甲苯磺酰氯