HuagongsheHuagongshe Chemistry Print Report · For research reference only
2,3-Diphenyl-2,3-butanediol → 2,3-Diphenyl-1,3-butadiene
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 2,3-Diphenyl-2,3-butanediol | HCID 97886 | — |
| Reactant | Potassium bisulfate | HCID 516920 | — |
| Product | 2,3-Diphenyl-1,3-butadiene | HCID 4129133 | — |
Reaction Steps
A mixture of 50 parts of 2,3-diphenyl-2,3-dihydroxybutane and 0.5 part of freshly dehydrated KHSO4 is distilled for 50 minutes at 11 Torr and 200° C. bath temperature. The fraction which is collected within the boiling range of 150°-180° C./11 Torr yields 43.8 parts of crude 2,3-diphenyl-1,3-butadiene. The product is stirred direct with 21.5 parts of acrylic acid and 2 parts of hydroquinone under a nitrogen atmosphere for 3 hours at 130° to 140° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04190433 |
| Source dataset | uspto-grants-1980_02 |
| ORD ID | ord-6523644be13140489bf1ec30bf280485 |
| Source note | uspto-grants-1980_02 |