HuagongsheHuagongshe Chemistry Print Report · For research reference only
Ethyl (imidazolidin-2-ylidene)acetate → 5-Methyl-7-(naphth-1-yl)-1,2,3,7-tetrahydroimidazolo[1,2-a]pyridine-6,8-dicarboxylic acid diethyl ester
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Ethyl (imidazolidin-2-ylidene)acetate | HCID 12377942 | — |
| Reactant | (1-Naphthylidene)acetoacetic acid ethyl ester | HCID 70607594 | — |
| Solvent | Ethanol | HCID 702 | — |
| Product | 5-Methyl-7-(naphth-1-yl)-1,2,3,7-tetrahydroimidazolo[1,2-a]pyridine-6,8-dicarboxylic acid diethyl ester | HCID 68119305 | 52% |
Reaction Steps
Heating a solution of 9.0 g of (naphth-1-ylidene)acetoacetic acid ethyl ester and 5.2 g of 2-carbethoxymethylideneimidazolidine in 60 ml of ethanol for 6 hours yields 5-methyl-7-(naphth-1-yl)-1,2,3,7-tetrahydroimidazolo[1,2-a]pyridine-6,8-dicarboxylic acid diethyl ester of melting point 169°-170°C (ethanol).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US03935220 |
| Source dataset | uspto-grants-1976_01 |
| ORD ID | ord-9617900c4d584f469610db4c44e0d66e |
| Source note | uspto-grants-1976_01 |