HuagongsheHuagongshe Chemistry Print Report · For research reference only
Benzaldehyde → 4-Methyl-2-phenyltetrahydro-2H-pyran
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Benzaldehyde | HCID 240 | — |
| Reactant | 3-Methyl-3-buten-1-ol | HCID 12988 | — |
| Reactant | 5,6-dihydro-4-methyl-2-phenyl-2H-pyran | HCID 108442 | — |
| Reactant | 2H-Pyran, tetrahydro-4-methylene-2-phenyl- | HCID 108444 | — |
| Catalyst | Palladium | HCID 23938 | — |
| Solvent | Ethanol | HCID 702 | — |
| Product | 4-Methyl-2-phenyltetrahydro-2H-pyran | HCID 3024003 | — |
Reaction Steps
In an autoclave, 10 g of a mixture of 5,6-dihydro-4-methyl-2-phenyl-2H-pyran and tetrahydro-4-methylene-2-phenyl-2H-pyran (prepared from benzaldehyde and isoprenol as described in Swiss Pat. No. 655 932) in 50 ml of ethyl alcohol were hydrogenated in the presence of 0.1 g of 10% Pd on charcoal to yield 9.7 g of pure tetrahydro-4-methyl-2-phenyl-2H-pyran.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US05219836 |
| Source dataset | uspto-grants-1993_06 |
| ORD ID | ord-e4fa6bb9f1434516bfd1388bd35344be |
| Source note | uspto-grants-1993_06 |