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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1697670Generated: October 31, 2026

Formaldehyde → 1-(3-Chloro-4-fluoro-phenyl)-4-(2-trifluoromethyl-benzenesulfonyl)-pyrrolidine-2-carboxylic Acid Ethyl Ester

https://huagongshe.com/reaction/1697670

Reaction equation

Participants

RoleNameHCIDCharge
ReactantFormaldehydeHCID 712—
ReactantEthyl 2-(3-chloro-4-fluoroanilino)acetateHCID 302640—
Reactant1-Ethenesulfonyl-2-trifluoromethyl-benzeneHCID 23466718—
Product1-(3-Chloro-4-fluoro-phenyl)-4-(2-trifluoromethyl-benzenesulfonyl)-pyrrolidine-2-carboxylic Acid Ethyl EsterHCID 66770907—

Reaction Steps

In analogy to the procedure described in example 343d, (3-chloro-4-fluoro-phenylamino)-acetic acid ethyl ester (CAS Reg. No. 2344-98-1) was reacted with paraformaldehyde and 1-ethenesulfonyl-2-trifluoromethyl-benzene (example 243c) to give the title compound as off-white solid.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08163793B2
Source datasetuspto-grants-2012_04
ORD IDord-a0d05ce62f03495499bc92096c73a522
Source noteuspto-grants-2012_04