Hammer, Charles F. published the artcileIsolation of a bicyclic aziridinium ion intermediate, Application of 1-Ethylpiperidin-3-ol, the publication is Chemical Communications (London) (1966), 919-20, database is CAplus.
cf. Ebnoether and Jucker, CA 60, 15830b. 1-Azabicyclo [3.1.0]-hexane in dry Et2O and EtClO4 in absolute EtOH gave a semi-solid, extraction of which with CH2Cl2 gave a product whose N.M.R. spectrum was similar to the N.M.R. spectrum of the oil obtained from 3-chloro-N-ethylpiperidine and AgClO4 in dry Me2CO; and presumably, based on the spectrum, the product possesses the bicyclic aziridinium structure (I).
Chemical Communications (London) published new progress about 13444-24-1. 13444-24-1 belongs to piperidines, auxiliary class Piperidine,Alcohol, name is 1-Ethylpiperidin-3-ol, and the molecular formula is C7H15NO, Application of 1-Ethylpiperidin-3-ol.
Referemce:
https://en.wikipedia.org/wiki/Piperidine,
Piperidine | C5H11N – PubChem