HuagongsheHuagongshe Chemistry Print Report · For research reference only
Maleic Anhydride → 5,6-Dimethyl-3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Maleic Anhydride | HCID 7923 | — |
| Reactant | 2,3-Dimethyl-1,3-butadiene | HCID 10566 | — |
| Solvent | Benzene | HCID 241 | — |
| Product | 5,6-Dimethyl-3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione | HCID 226297 | — |
Reaction Steps
A mixture of 2,3-dimethyl-1,3-butadiene (10 g; 0.122 mol), maleic anhydride (11.9 g; 0.122 mol) and benzene (30 ml) was stirred at room temperature for 10 hours. Precipitates were removed by filtration, and the filtrate was evaporated under reduced pressure to give 4,5-dimethyl-4-cyclohexene-1,2-dicarboxylic anhydride. M.P., 73-74° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04598078 |
| Source dataset | uspto-grants-1986_07 |
| ORD ID | ord-baae4e57baab43e095f0b7af4fa6b8a7 |
| Source note | uspto-grants-1986_07 |