Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent， Quality Control of: 1-Aminopiperidine, Which mentioned a new discovery about 2213-43-6
Starting from semisquaric acid (1), the semisquaric esters 6a-d and semisquaric chloride (7) were prepared.Reaction of 6c or 7 with amines as well as the method of mixed anhydrides, starting from 1, afforded the semisquaric amides 10a-n (Methods A, B, C, respectively).The semisquaric amides 10g,h,i were also obtained by the reaction of semisquaric chloride (7) with the trimethylsilylamines 11a-c (Method D); 10h was furthermore prepared by the DCC-method (Method E).The reaction of butyl squarate (6) with hydrazines and N-alkylhydroxylamines afforded the semisquaric hydrazides 13a-d and the semisquaric hydroxylamides 15a-c, respectively.
Because enzymes can increase reaction rates by enormous factors and tend to be very specific, Quality Control of: 1-Aminopiperidine, typically producing only a single product in quantitative yield, they are the focus of active research.you can also check out more blogs about 2213-43-6
Reference：
Piperidine – Wikipedia,
Piperidine | C5H849N – PubChem