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The title compound has been obtained in moderate yield by a new and unexpected base-induced ring contraction from a 1,4-thiazine precursor. Its X-ray structure showing hydrogen bonded dimers is compared with those of other crystallographically characterized 2-acylpyrroles.
Aitken , R A , Bloomfield , C , McGeachie , L J R & Slawin , A M Z 2020 , ' Diethyl pyrrole-2,5-dicarboxylate ' , Molbank , vol. 2020 , no. 1 , M1117 . https://doi.org/10.3390/M1117
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