HuagongsheHuagongshe Chemistry Print Report · For research reference only
Acetic Acid → [(9-Ethyl-9h-carbazol-3-yl)methylene]malononitrile
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Acetic Acid | HCID 176 | — |
| Reactant | Malononitrile | HCID 8010 | — |
| Reactant | 9-ethyl-9H-carbazole-3-carbaldehyde | HCID 82055 | — |
| Reactant | Ammonium Acetate | HCID 517165 | — |
| Solvent | Benzene | HCID 241 | — |
| Product | [(9-Ethyl-9h-carbazol-3-yl)methylene]malononitrile | HCID 290167 | — |
Reaction Steps
About 11.1 grams (0.05 moles) N-ethyl carbazole-3-carboxaldehyde, about 3.1 grams (0.05 moles) malononitrile, about 1 milliliter glacial acetic acid, about 0.35 grams ammonium acetate and about 40 milliliters benzene are heated to boiling under reflux conditions for about 30 minutes. The liquid portion of this mixture is separated from the brown colored solution by rotary evaporation, the solid residues twice recrystallized with glacial acetic acid washed with ethanol and dried in a vacuum oven. Yield: 7.0 grams of bright yellow needle like crystals m.p. 164°-165° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04006017 |
| Source dataset | uspto-grants-1977_02 |
| ORD ID | ord-48f2385810d848cb81c381b97afbe48f |
| Source note | uspto-grants-1977_02 |