v. Braun, Julius published the artcileSuffinic acids, Synthetic Route of 4972-31-0, the publication is Berichte der Deutschen Chemischen Gesellschaft [Abteilung] B: Abhandlungen (1923), 549-53, database is CAplus.
In an attempt to prepare compounds of the type R2NCS.S.SO2R’, that their stability might be compared with compounds of the type R(O:)C.S.C(: S)NH2, R’SO2Cl was caused to react with R2NCSSH.NHR2; instead of the expected compound however, the corresponding (R2NSCS-)2 was obtained, together with R’SO2H.NHR2. That is, the sulforyl chloride simply acted as an oxidizing agent, itself being reduced to the sulfinic acid. 4 mols. Me2NH, 2 mols. CS2 and 1 mol. PbSO22Cl in dry Et2O gave about 80% of the theory of (Me2NCS.S-)2 and PhSO2H, isolated through the Fe salt. Dipiperidyl-thiuram disulfide (A), C12H20N7S4, obtained in 60% yield, m. 128°. Tetralin-β-sulfonylpiperidide, C10H11SO2NC5H10, obtained in a small yield (in addition to a 70% yield of A), from the interaction of C5H11N, CS2 and C10H11SO2Cl, m. 98-100°. Tetralin-β-sulfinic acid, needles from concentrated aqueous solution, m. 87-8°. Benzenesulfinic anilide, from the chloride and PhNH2 in dry Et2O at 0°, m. 112-4°. Heated with acids, a deep-seated change occurs, without a smooth splitting into the components. The latter takes place by short heating with dilute alc. KOH or upon longer standing in the cold. The piperidide sinters at 8O° and m. 83°. The dimethylamide, yellow oil, b2-3 90°. The amide, prepared in Et2O with Et2O-NH3, m. 121°. Toluene-p-sulfinic amide, small needles, m. 120°; anilide, m. 138°.
Berichte der Deutschen Chemischen Gesellschaft [Abteilung] B: Abhandlungen published new progress about 4972-31-0. 4972-31-0 belongs to piperidines, auxiliary class Piperidine,Benzene, name is 1-(Phenylsulfinyl)piperidine, and the molecular formula is C19H15NO3, Synthetic Route of 4972-31-0.
Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem