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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 652566Generated: October 26, 2026

4-Hydroxybenzaldehyde → 5-(p-Methoxybenzylidene)-hydantoin

https://huagongshe.com/reaction/652566

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-HydroxybenzaldehydeHCID 126—
ReactantGlycineHCID 750—
Reactant4-MethoxybenzaldehydeHCID 31244—
ReactantDisodium glutamateHCID 167560—
Product5-(p-Methoxybenzylidene)-hydantoinHCID 94749—

Reaction Steps

5-(p-Methoxybenzylidene)-hydantoin was prepared in the same manner as in Example 4, except that 46.8 g (0.25 mol) of sodium L-glutamate.monohydrate and 68.1 g (0.50 mol) of p-methoxybenzaldehyde were used in lieu of glycine and p-hydroxybenzaldehyde, respectively. During the reaction, the pH of the reaction mixture was 9.9 to 9.7.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04672127
Source datasetuspto-grants-1987_06
ORD IDord-21a593b0f39944088baeaee864758153
Source noteuspto-grants-1987_06