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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 14619Generated: October 26, 2026

Chlorodifluoroacetyl chloride → Rac-4-[2,2-difluoro-2-(4'-fluoro-biphenyl-4-yloxy)-acetylamino]-thiophene-3-carboxylic acid

https://huagongshe.com/reaction/14619

Reaction equation

Participants

RoleNameHCIDCharge
ReactantChlorodifluoroacetyl chlorideHCID 67713—
Reactant4-Fluoro-4'-hydroxybiphenylHCID 345420—
ReactantMethyl 4-aminothiophene-3-carboxylateHCID 2777610—
ProductRac-4-[2,2-difluoro-2-(4'-fluoro-biphenyl-4-yloxy)-acetylamino]-thiophene-3-carboxylic acidHCID 16068689—

Reaction Steps

In analogy to Example 58, the title compound was prepared using 4-amino-thiophene-3-carboxylic acid methyl ester, chlorodifluoroacetyl chloride and 4-fluoro-4′-hydroxybiphenyl. MS (m/e): 406.1 (M−H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07732452B2
Source datasetuspto-grants-2010_06
ORD IDord-97d98d3be3ea433fbff47711219bf1d3
Source noteuspto-grants-2010_06