Ring opening reactions of 6-oxo-substituted spiro-pyrrolidinediones: synthesis of 4-substituted-1,5-dihydro-3-hydroxy-2-oxo-1,5-diphenyl-2H-pyrroles was written by Emerson, David W.;Titus, Richard L.;Mones, Marlon D.. And the article was included in Journal of Heterocyclic Chemistry in 1998.Formula: C9H12O4 This article mentions the following:
Reaction of 2-oxocycloalkylglyoxylate esters with N-phenylmethyleneaniline yields 2-aza-3,4,6-trioxo-1,2-diphenylspiro[4.n]alkanes. These undergo solvolytic opening of the oxocycloalkane ring to yield 4-substituted-1,5-dihydro-3-hydroxy-2-oxo-1,5-diphenyl-2H-pyrroles. In the experiment, the researchers used many compounds, for example, Ethyl 2-oxo-2-(2-oxocyclopentyl)acetate (cas: 39163-39-8Formula: C9H12O4).
Ethyl 2-oxo-2-(2-oxocyclopentyl)acetate (cas: 39163-39-8) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Formula: C9H12O4
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics