HuagongsheHuagongshe Chemistry Print Report · For research reference only
2-Hydrazino-delta-2-imidazoline hydrobromide → 2-(3,4-Dicarbethoxy-2,5-diethyl-pyrrol-1-yl)amino-4,5-dihydro-1H-imidazole hydrobromide
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 2-Hydrazino-delta-2-imidazoline hydrobromide | HCID 3085099 | — |
| Reactant | Diethyl 2,3-dipropanoylbutanedioate | HCID 13126143 | — |
| Reactant | Diethyl ether 2-propanol | HCID 22147583 | — |
| Solvent | Diethyl Ether | HCID 3283 | — |
| Product | 2-(3,4-Dicarbethoxy-2,5-diethyl-pyrrol-1-yl)amino-4,5-dihydro-1H-imidazole hydrobromide | HCID 21514455 | — |
Reaction Steps
The compound is obtained following substantially the method described in Example 3, by reacting 13 g. (0.0455 mole) of diethyl-2,3-dipropionyl-succinate with 8.14 g. (0.0449 mole) of 2-hydrazino-4,5-dihydro-1H-imidazole hydrobromide. Yield 55 g. M.p. 181°-2°C (from isopropanol/diethyl ether). The free base melts at 155°C (from diethyl ether).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US03979408 |
| Source dataset | uspto-grants-1976_09 |
| ORD ID | ord-f06355498c94499ab7f87ebecc268bf3 |
| Source note | uspto-grants-1976_09 |