HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1979610Generated: November 1, 2026
Methanol → 1-[2-(Dimethylamino)ethyl]-3,4-dimethyl-1H-pyrrole-2,5-dione
https://huagongshe.com/reaction/1979610
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Methanol | HCID 887 | — |
| Reactant | N,N'-Dimethylethylenediamine | HCID 8070 | — |
| Reactant | Dimethylmaleic anhydride | HCID 13010 | — |
| Solvent | Chloroform | HCID 6212 | — |
| Product | 1-[2-(Dimethylamino)ethyl]-3,4-dimethyl-1H-pyrrole-2,5-dione | HCID 54289270 | — |
Reaction Steps
A solution of 17.5 g (0.2 mol.) of asym.dimethyl ethylene diamine in 100 ml of methanol is added dropwise to a solution of 25.1 g (0.2 mol.) of 2,3-dimethyl maleic acid anhydride in 100 ml of chloroform. The mixture is stirred for one hour at 15° C. The solvents are evaporated in vacuo and the residue is recrystallised from acetone. The pure product has a melting point of 9° C. and is used in the next step (c).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US04481340 |
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| Source dataset | uspto-grants-1984_11 |
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| ORD ID | ord-e44d75a01b7b40698879c3b51d86dc65 |
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| Source note | uspto-grants-1984_11 |
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