I found the field of Chemistry very interesting. Saw the article Electrochemical oxidative aminocarbonylation of terminal alkynes published in 2020. Name: 1,4-Dioxa-8-azaspiro[4.5]decane, Reprint Addresses Chen, YH; Lei, AW (corresponding author), Wuhan Univ, Coll Chem & Mol Sci, IAS, Wuhan, Peoples R China.. The CAS is 177-11-7. Through research, I have a further understanding and discovery of 1,4-Dioxa-8-azaspiro[4.5]decane
Oxidative carbonylation using CO/O-2 is an attractive strategy to construct carbonyl compounds, but the explosive limit of the gas mixture hampers its application. Now, this safety issue is overcome in the aminocarbonylation of alkynes by replacing the external oxidant O-2 by electrochemistry facilitating a mild and safe reaction. Palladium-catalysed oxidative carbonylation using oxygen as the oxidant is an economical approach; however, the gas mixture of CO and air has an explosive limit of 12.5-74.0% that could hamper extensive application of this process. Herein we report an electrochemical aminocarbonylation of alkynes under atmospheric pressure in an undivided cell without an external oxidant. The transformation has a broad substrate scope (83 examples) that involves primary amines and ammonium salts. Furthermore, mechanistic studies through cyclic voltammetry, in situ infrared and quick-scanning X-ray absorption fine structure spectroscopy reveal the reasons for this protocol proceeding smoothly under electrochemical conditions.
Name: 1,4-Dioxa-8-azaspiro[4.5]decane. Welcome to talk about 177-11-7, If you have any questions, you can contact Zeng, L; Li, HR; Hu, JC; Zhang, DC; Hu, JY; Peng, P; Wang, SC; Shi, RY; Peng, JQ; Pao, CW; Chen, EL; Lee, JF; Zhang, H; Chen, YH; Lei, AW or send Email.
Reference：
Piperidine – Wikipedia,
Piperidine | C5H7510N – PubChem