Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Benzene | HCID 241 | — |
| Reactant | Cyclobutanone | HCID 14496 | — |
| Reactant | Trimethylolmethane | HCID 78432 | — |
| Catalyst | p-Toluenesulfonic acid monohydrate | HCID 521998 | — |
| Solvent | Triethylamine | HCID 8471 | — |
| Product | HCID 59792598 | HCID 59792598 | 73.1% |
Reaction Steps
A mixture of 2-(hydroxymethyl)-1,3-propanediol (5.58 g, 52.6 mmol), cyclobutanone (3.69 g, 52.6 mmol), p-toluenesulfonic acid monohydrate (550 mg, 2.89 mmol) and benzene (92.9 ml) was refluxed in a round-bottom flask equipped with a cooling tube and Dean-Stark for 8 hours and 35 minutes. After the reaction mixture was cooled to room temperature, triethylamine (1 ml) was added to the reaction mixture and the mixture was concentrated. The residue was purified by silica gel column chromatography (silica gel: 300 g, elution solvent: heptane, heptane/ethyl acetate=1/1). The fractions containing the title compound were collected with ethyl acetate and concentrated. The residue was dissolved in diethyl ether and then the mixture was concentrated to obtain the title compound (6.08 g, yield: 73.1%) as a pale yellow oil.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patent number | US08124780B2 |
|---|
| Source dataset | uspto-grants-2012_02 |
|---|
| ORD ID | ord-10d857c5642d4841825bb81d87fb3f52 |
|---|
| Source note | uspto-grants-2012_02 |
|---|