HuagongsheHuagongshe Chemistry Print Report · For research reference only
Ethanol → 1,1-Diethoxy-3-methyl-2-butene
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Ethanol | HCID 702 | — |
| Reactant | Phosphoric Acid | HCID 1004 | — |
| Reactant | Ethyl orthoformate | HCID 31214 | — |
| Reactant | 3-Methyl-2-butenal | HCID 61020 | — |
| Solvent | Diethyl Ether | HCID 3283 | — |
| Product | 1,1-Diethoxy-3-methyl-2-butene | HCID 5215320 | 65% |
Reaction Steps
Bull. Soc. Fr. 1965, 1007-1014 discloses the use of phosphoric acid. 3-Methyl-2-butenal is stirred with ethanol, triethyl orthoformate and phosphoric acid at room temperature for 40 hours. The reaction mixture is then taken up in ether, washed with 0.5 N aqueous ammonia and dried over sodium sulfate. Subsequent distillation affords 3-methyl-2-butenal diethyl acetal in a yield of 65%.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US06313322B1 |
| Source dataset | uspto-grants-2001_11 |
| ORD ID | ord-fef6dba3a65e4038bb8b2afcaf7eadc8 |
| Source note | uspto-grants-2001_11 |