Category: thiazolidine. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Ethyl 3,5-Dimethyl-2-pyrrolecarboxylate, is researched, Molecular C9H13NO2, CAS is 2199-44-2, about Isolation and characterization of a novel tetrahydro-[2,2′]bipyrrolyl dimer as an impurity from a Knorr reaction. Author is Thompson, Alison; Alattar, Yousef; Beshara, Cory S.; Burley, Rodney K.; Cameron, T. Stanley; Robertson, Katherine N..
A dimer, tetra-Et 2,2′,3,3′-tetramethyl-1,1′,2,2′-tetrahydro-4H,4’H-2,2′-bipyrrolyl-5,5,5′,5′-tetracarboxylate (I), has been isolated as an impurity from a Knorr reaction for the synthesis of Et 3,5-dimethylpyrrole-2-carboxylate from 2,4-pentanedione and di-Et oximinomalonate in a dissolving zinc reduction The solid-state structure of I was determined by X-ray crystallog. Knorr reactions typically rely upon the requisite pyrrole being the only water-insoluble crystalline material present in the reaction mixture, and so work-up and purification procedures for Knorr reactions should be monitored carefully given the water-insolubility of this dimer.
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Reference:
Thiazolidine – Wikipedia,
Thiazolidine – ScienceDirect.com