Authors Elagamy, A; Althagafi, I; Pratap, R in ROYAL SOC CHEMISTRY published article about STEREOSELECTIVE-SYNTHESIS in [Elagamy, Amr; Pratap, Ramendra] Univ Delhi, Dept Chem, North Campus, Delhi 110007, India; [Althagafi, Ismail] Umm Al Qura Univ, Fac Sci, Chem Dept, Mecca 21955, Saudi Arabia in 2021, Cited 36. Quality Control of 1,4-Dioxa-8-azaspiro[4.5]decane. The Name is 1,4-Dioxa-8-azaspiro[4.5]decane. Through research, I have a further understanding and discovery of 177-11-7
A mild and efficient route for the synthesis of conjugated trienes via nitroethane-mediated ring contraction of 2-oxobenzo[h]chromenes/2H-pyran-2-ones followed by decarboxylative rearrangement of the obtained spirobutenolides and butenolides is described. The (E)-isomer of trienes was obtained by step-wise and one-pot approaches from 2-oxobenzo[h]chromenes. Butenolides 4a-l as new substrates have been developed for the construction of trienes. The mixture of the (E)- and (Z)-isomers of spirobutenolides undergoes decarboxylative rearrangement in the presence of sodium ethoxide as a base to yield the (E)-isomer of trienes, while the (E)-isomer of butenolides reacts to give a mixture of (2E,4E)- and (2E,4Z)-isomers of trienes in an almost steady ratio of 45 : 55 or 1 : 1.2. The structure and geometry of the obtained butenolides and trienes were confirmed by single-crystal X-ray analysis.
Quality Control of 1,4-Dioxa-8-azaspiro[4.5]decane. About 1,4-Dioxa-8-azaspiro[4.5]decane, If you have any questions, you can contact Elagamy, A; Althagafi, I; Pratap, R or concate me.
Reference：
Piperidine – Wikipedia,
Piperidine | C5H7510N – PubChem