Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent， COA of Formula: C6H13NO, Which mentioned a new discovery about 3433-37-2
Several routes to the synthesis of the polyamines 2a and 2b required for the preparation of the muscarinic antagonists AF-DX 384 1a and its perhydroazepine isomer 1b respectively have been developed and compared. Piperidine 2a has been obtained in 4 steps in 13-15% overall yield from 2-(chloromethyl)-pyridine 3. The perhydroazepine 2b has been prepared in 4 steps in 49% overall yield from 3-aminolactam 7. Transformations of piperidinemethanol 11 afford exclusively compound 2a (5 steps, 17-20% overall yield), via the N-tosylpiperidine 12, but lead to a 1:1 mixture of isomers 2a and 2b (4 steps, 15-20% overall yield for compounds 2a and 2b) via the N-(cyanomethyl)piperidine 15. Limitations to the ring enlargement of piperidine derivatives as a function of the heterocyclic nitrogen substituent are defined.
I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 3433-37-2, help many people in the next few years.COA of Formula: C6H13NO
Reference：
Piperidine – Wikipedia,
Piperidine | C5H2793N – PubChem