HuagongsheHuagongshe Chemistry Print Report · For research reference only
Dimethylamine → N-(3-dimethylamino-3-benzoylpropenylidene)-N-methylmethanaminium tetrafluoroborate
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Dimethylamine | HCID 674 | — |
| Reactant | Triethyloxonium tetrafluoroborate | HCID 2723982 | — |
| Reactant | 4-Dimethylamino-1-phenyl-3-butene-1,2-dione | HCID 54572896 | — |
| Reactant | N-(3-dimethylamino-3-phenylpropenylidene)-N-methylmethanaminium tetrafluoroborate | HCID 75556698 | — |
| Solvent | Dichloromethane | HCID 6344 | — |
| Product | N-(3-dimethylamino-3-benzoylpropenylidene)-N-methylmethanaminium tetrafluoroborate | HCID 86743604 | — |
Reaction Steps
The procedure is as in Example 24 for the preparation of N-(3-dimethylamino-3-phenylpropenylidene)-N-methylmethanaminium tetrafluoroborate, starting with 4-dimethylamino-1-phenyl-3-butene-1,2-dione (9.3 g), triethyloxonium tetrafluoroborate (10.3 g) and dimethylamine (3.2 cc) in dichloromethane (140 cc). After precipitation in ethyl acetate (30 cc), N-(3-dimethylamino-3-benzoylpropenylidene)-N-methylmethanaminium tetrafluoroborate (5 g), m.p. 140° C., is obtained.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04971979 |
| Source dataset | uspto-grants-1990_11 |
| ORD ID | ord-787f4eb0dfb442cea39374579af14eba |
| Source note | uspto-grants-1990_11 |