A. Elhadri et G. Leclerc, A CONVENIENT SYNTHESIS OF CIS-4-(SULFOMETHYL)-PIPERIDINE-2-CARBOXYLICACID - NMR ASSIGNMENT, Journal of heterocyclic chemistry, 30(3), 1993, pp. 631-635
cis-4-(Sulfomethyl)piperidine-2-carboxylic acid was obtained in 22% ov
erall yield from 4-(hydroxymethyl)-pyridine via the o-silyl N-oxide an
d trimethylsilylcyanide. The cis configuration of 5 was unambiguously
assigned by 200 MHz H-1 nmr and cosy experiments.