Synthesis and Michael reaction of 3,4-dimethylpyrrole was written by Cheng, D. O.;Bowman, T. L.;LeGoff, E.. And the article was included in Journal of Heterocyclic Chemistry in 1976.COA of Formula: C8H11NO2 This article mentions the following:
MeCH:CHCO2Et and 4-MeC6H4SO2CH2NC gave 3-carbethoxy-4-methylpyrrole, which was reduced with NaAlH2(OCH2CH2OMe)2 to 3,4-dimethylpyrrole (I). Michael addition of Me vinyl ketone and butyn-2-one to I gave the bisadducts, 2,5-bis(3-oxobutyl)-3,4-dimethylpyrrole and 2,5-bis(3-oxobutenyl)-3,4-dimethylpyrrole, resp., while Et propiolate gave only the monoadduct, Et 3-(3,4-dimethylpyrrol-2-yl)propenoate (II). Catalytic reduction of II gave Et 3-(3,4-dimethylpyrrol-2-yl)propanoate, which with Et propiolate gave Et 3-(5-carboethoxyethyl-3,4-dimethylpyrrol-2-yl)propenoate (III). In the experiment, the researchers used many compounds, for example, Ethyl 4-methyl-1H-pyrrole-3-carboxylate (cas: 2199-49-7COA of Formula: C8H11NO2).
Ethyl 4-methyl-1H-pyrrole-3-carboxylate (cas: 2199-49-7) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. 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.COA of Formula: C8H11NO2
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics