Weng, Zhen-Tao et al. published their research in Journal of Organic Chemistry in 2011 | CAS: 33439-27-9

1-Tosylpiperidin-4-one (cas: 33439-27-9) belongs to piperidine derivatives. Piperidine is a saturated organic heteromonocyclic parent, an azacycloalkane, a secondary amine and a member of piperidines. Piperidine prefers a chair conformation, similar to cyclohexane. Unlike cyclohexane, piperidine has two distinguishable chair conformations: one with the N–H bond in an axial position, and the other in an equatorial position.Formula: C12H15NO3S

Catalytic Asymmetric α-Alkylation of Ketones and Aldehydes with N-Benzylic Sulfonamides through Carbon-Nitrogen Bond Cleavage was written by Weng, Zhen-Tao;Li, Yuan;Tian, Shi-Kai. And the article was included in Journal of Organic Chemistry in 2011.Formula: C12H15NO3S This article mentions the following:

A range of ketones and aldehydes smoothly undergoes asym. SN1 α-alkylation with N-benzylic sulfonamides in the presence of 10 mol % of a chiral imidazolidinone and trifluoroacetic acid to give the corresponding products in good to excellent yields and with good enantioselectivity. This chem. has been successfully extended to the asym. desymmetrization of 4-substituted cyclohexanones, which exhibits greater than 99:1 diastereoselectivity and good enantioselectivity. In the experiment, the researchers used many compounds, for example, 1-Tosylpiperidin-4-one (cas: 33439-27-9Formula: C12H15NO3S).

1-Tosylpiperidin-4-one (cas: 33439-27-9) belongs to piperidine derivatives. Piperidine is a saturated organic heteromonocyclic parent, an azacycloalkane, a secondary amine and a member of piperidines. Piperidine prefers a chair conformation, similar to cyclohexane. Unlike cyclohexane, piperidine has two distinguishable chair conformations: one with the N–H bond in an axial position, and the other in an equatorial position.Formula: C12H15NO3S

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem