HuagongsheHuagongshe Chemistry Print Report · For research reference only
Cyclopentadiene → 826-62-0
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Cyclopentadiene | HCID 7612 | — |
| Reactant | Maleic Anhydride | HCID 7923 | — |
| Product | 826-62-0 | HCID 13223 | 25% |
Reaction Steps
The Diels-Alder adduct from cyclopentadiene and maleic anhydride, endo-cis-5-norbornene-2,3-dicarboxylic anhydride, m.p. 165° C., was heated at 220° C. for 4 hours. On cooling the product solidified with a melting point of 101° C. The crude reaction product was recrystallized from benzene three times to isolate exo-cis-5-norbornene-2,3-dicarboxylic anhydride, m.p. 141° C., in 25% yield.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04012575 |
| Source dataset | uspto-grants-1977_03 |
| ORD ID | ord-3c08400b4abe4e1789bd3fdee1e4e9a6 |
| Source note | uspto-grants-1977_03 |