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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 326760Generated: October 30, 2026

Benzaldehyde → 2-Phenyl-4-(phenylmethylene)-5(4H)-oxazolone

https://huagongshe.com/reaction/326760

Reaction equation

Participants

RoleNameHCIDCharge
ReactantBenzaldehydeHCID 240—
ReactantHippuric AcidHCID 464—
ReactantWaterHCID 962—
ReactantPotassium BicarbonateHCID 516893—
SolventAcetic AnhydrideHCID 7918—
Product2-Phenyl-4-(phenylmethylene)-5(4H)-oxazoloneHCID 13666349.5%

Reaction Conditions

Temperature50 °C

Reaction Steps

1.8 g of hippuric acid and 0.4 g of potassium bicarbonate are dissolved in 4 ml of acetic anhydride, the solution is heated for a few minutes at 50° C. and then cooled to room temperature and 1.49 g of benzaldehyde are added. After 1 hour at room temperature, 20 ml of distilled water are added at 80° C. The solid which precipitates is filtered off, washed with water and ethanol and then dried to give 1.24 g of the expected product in the form of a yellow solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05270317
Source datasetuspto-grants-1993_12
ORD IDord-942fa7b5ef6447e887ff6d9d2560f21b
Source noteuspto-grants-1993_12