(2019/04/05)
p. 2305 - 2308
(2011/05/15)1-benzenesulfonyl-piperidine-4,4-dicarboxylic acid diethyl ester
1-(phenylsulfonyl)-4-piperidinecarboxylic acid ethyl ester
4-carbethoxypiperidine
benzenesulfonyl chloride
9-benzenesulfonyl-2,4,9-triaza-spiro[5.5]undecane-1,3,5-trione