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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1697736Generated: October 25, 2026

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

https://huagongshe.com/reaction/1697736

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-(Trifluoromethyl)phenylhydrazineHCID 136200—
Reactant(2S,4R)-4-methanesulfonyl-1-(3-oxo-thiobutyryl)-pyrrolidine-2-carboxylic acid methyl esterHCID 86646866—
Product(2S,4R)-4-Methanesulfonyl-1-[5-methyl-2-(4-trifluoromethyl-phenyl)-2H-pyrazol-3-yl]-pyrrolidine-2-carboxylic Acid Methyl EsterHCID 67278243—

Reaction Steps

In analogy to the procedure described in example 192 h, (2S,4R)-4-methanesulfonyl-1-(3-oxo-thiobutyryl)-pyrrolidine-2-carboxylic acid methyl ester (example 448c) was reacted with 4-(trifluoromethyl)phenylhydrazine (CAS Reg. No. 368-90-1) to give the title compound. MS (ESI): m/z=432.0 [M+H]+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08163793B2
Source datasetuspto-grants-2012_04
ORD IDord-949733d0453c4faeb6ad454dfe8f9a35
Source noteuspto-grants-2012_04