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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1697568Generated: November 1, 2026

4-(Trifluoromethyl)phenylhydrazine → (2S,4R)-4-Benzenesulfonyl-1-[5-methyl-2-(4-trifluoromethyl-phenyl)-2H-pyrazol-3-yl]-pyrrolidine-2-carboxylic Acid Methyl Ester

https://huagongshe.com/reaction/1697568

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-(Trifluoromethyl)phenylhydrazineHCID 136200—
Reactant(2S,4R)-4-Benzenesulfonyl-1-(3-oxo-thiobutyryl)-pyrrolidine-2-carboxylic Acid Methyl EsterHCID 86646825—
Product(2S,4R)-4-Benzenesulfonyl-1-[5-methyl-2-(4-trifluoromethyl-phenyl)-2H-pyrazol-3-yl]-pyrrolidine-2-carboxylic Acid Methyl EsterHCID 67278214—

Reaction Steps

In analogy to the procedure described in example 192 h, (2S,4R)-4-benzenesulfonyl-1-(3-oxo-thiobutyryl)-pyrrolidine-2-carboxylic acid methyl ester was reacted with 4-(trifluoromethyl)phenylhydrazine (CAS Reg. No. 368-90-1) to give the title compound as yellow solid. MS (ESI): m/z=394.1 [M+H]+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08163793B2
Source datasetuspto-grants-2012_04
ORD IDord-e559549327514914ac02afd5138e18a0
Source noteuspto-grants-2012_04