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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1658205Generated: October 31, 2026

Formaldehyde → Benzenesulfonamide, 2-chloro-4-(5-oxo-3-phenyl-1-imidazolidinyl)-

https://huagongshe.com/reaction/1658205

Reaction equation

Participants

RoleNameHCIDCharge
ReactantFormaldehydeHCID 712—
ReactantHCID 21528845HCID 21528845—
SolventEthanolHCID 702—
SolventWaterHCID 962—
ProductBenzenesulfonamide, 2-chloro-4-(5-oxo-3-phenyl-1-imidazolidinyl)-HCID 3041005—

Reaction Steps

2-Phenylamino-N-(3-chloro-4-sulphamoylphenyl)-acetamide (34 g) was dissolved in ethanol (300 ml) and paraformaldehyde (6.0 g) in water (600 ml) added. The mixture was refluxed 4 hrs and cooled. The product was worked up as in Example 1(c) to yield: 18 g, m.p. 257°-259°.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS03963706
Source datasetuspto-grants-1976_06
ORD IDord-08a3c4f3aa924cee884ea89ee6375cab
Source noteuspto-grants-1976_06