HuagongsheHuagongshe Chemistry Print Report · For research reference only
Sulfuric Acid → HCID 10796865, compound
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Sulfuric Acid | HCID 1118 | — |
| Reactant | Sodium Bicarbonate | HCID 516892 | — |
| Reactant | HCID 53678160 | HCID 53678160 | — |
| Solvent | Water | HCID 962 | — |
| Product | Furan, 2,5-dihydro-2,5-dimethoxy-3-methyl- | HCID 10606863 | 18.8% |
| Product | HCID 10796865 | HCID 10796865 | 55.6% |
| Product | 2-Methyl-2-butenedial | HCID 53436345 | 2.9% |
Reaction Steps
A solution of 0.2 g of concentrated sulfuric acid and 1 g of water in 9.5 of 2-methyl-1,1,4,4-tetramethoxybut-2-ene was stirred for 0.5 h at RT. The sulfuric acid was neutralized with solid NaHCO3, after which the mixture was filtered. The filtrate was worked up by distillation in an Allihn apparatus (150° C./20 mbar), 0.8 g of residue and 4.8 g of distillate being obtained. Gas chromatographic analysis gave 55.6% of (E)-2-methyl-4,4-dimethoxybut-2-enal, 2.9% of 2-methylbut-2-ene-1,4-dial, 18.8% of 3-methyl-2,5-dimethoxy-2,5-dihydrofuran and 8.2% of unconverted starting material.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04804786 |
| Source dataset | uspto-grants-1989_02 |
| ORD ID | ord-adfd6d93792e4632963520b303a61222 |
| Source note | uspto-grants-1989_02 |