HuagongsheHuagongshe Chemistry Print Report · For research reference only
Maleic Anhydride → 4,5-Dichlorotetrahydrophthalic anhydride
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Maleic Anhydride | HCID 7923 | — |
| Reactant | 2,3-Dichloro-1,3-butadiene | HCID 15447 | — |
| Solvent | Toluene | HCID 1140 | — |
| Product | 4,5-Dichlorotetrahydrophthalic anhydride | HCID 54139895 | 61.8% |
Reaction Steps
A 500 mL reaction flask was charged with 34.5 g of 2,3-dichlorobutadiene and 27.5 g of maleic anhydride. 200 mL of toluene was added, along with a small amount of BHT (0.5 g). The solution was heated to reflux until the reaction was complete. The toluene was removed and the product recrystallized from ethyl acetate/hexanes to give 38.25 g (61.8%) of 4,5-dichlorotetrahydrophthalic anhydride.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US05059697 |
| Source dataset | uspto-grants-1991_10 |
| ORD ID | ord-97799dd1ebef4fde987c5935e4a800db |
| Source note | uspto-grants-1991_10 |