4-(3-Dialkylamino-2,5-dioxopyrrolidin-1-yl)benzoic acid esters |
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Authors: | O A Kolyamshin V A Danilov N I Kol’tsov |
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Institution: | (1) I.N. Ul’yanov Chuvash State University, Moskovskii pr. 15, Cheboksary, 428015, Russia |
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Abstract: | Reactions of alkyl 4-aminobenzoates with maleic anhydride give the corresponding alkyl 4-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)benzoates, and the latter are converted into 4-(3-dialkylamino-2,5-dioxo-2,3,4,5-tetrahydro-1H-pyrrol-1-yl)benzoates by treatment with secondary amines. |
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