| Identification | Back Directory | [Name]
Pipethanate | [CAS]
4546-39-8 | [Synonyms]
Pipethanate
Benzilic acid 2-piperidinoethyl ester
Hydroxydiphenylacetic acid 2-piperidinoethyl ester
α-Hydroxy-α,α-diphenylacetic acid 2-(1-piperidyl)ethyl ester
Benzeneacetic acid, α-hydroxy-α-phenyl-, 2-(1-piperidinyl)ethyl ester | [Molecular Formula]
C21H25NO3 | [MOL File]
4546-39-8.mol | [Molecular Weight]
339.43 |
| Hazard Information | Back Directory | [Originator]
Panpurol ,Nippon Shinyaku, Japan | [Definition]
ChEBI: Pipethanate is a diarylmethane. | [Manufacturing Process]
Pipethanate hydrochloride is dissolved in water and the solution is made alkaline by adding 10% sodium hydroxide solution. The crystals that are separated are filtered off and recrystallized from dilute ethanol. The monohydrate thereby obtained is dehydrated at 100°C under reduced pressure for 20 minutes. The products that are now in the form of a syrup due to loss of water of crystallization are further dehydrated for 2 days in a desiccator over phosphorus pentoxide whereupon the anhydrous pipethanate is obtained.
3.8 g of the anhydrous pipethanate prepared by the method described is dissolved in 15 cc of acetone, 18 g of purified ethyl bromide is added, and the mixture heated for 8 hours in a sealed tube at 100°C to 110°C. After cooling the crystals are separated and isolated by filtration. They are then washed with acetone to give 5.2 g (95.6%) of pipethanate ethylbromide with a decomposition point of 218°C to 220°C. The crystals are almost pure. | [Therapeutic Function]
Anticholinergic, Antiulcer |
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