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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1697746Generated: October 25, 2026

2,2,2-Trifluoroethylhydrazine → (2S,4R)-4-Methanesulfonyl-1-[5-methyl-2-(2,2,2-trifluoro-ethyl)-2H-pyrazol-3-yl]-pyrrolidine-2-carboxylic Acid Methyl Ester

https://huagongshe.com/reaction/1697746

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2,2,2-TrifluoroethylhydrazineHCID 78740—
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-(2,2,2-trifluoro-ethyl)-2H-pyrazol-3-yl]-pyrrolidine-2-carboxylic Acid Methyl EsterHCID 67277382—

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 2,2,2-trifluoroethylhydrazine (CAS Reg. No. 5042-30-8) to give the title compound. MS (ESI): m/z=370.4 [M+H]+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08163793B2
Source datasetuspto-grants-2012_04
ORD IDord-4332ad36b5034f4691c06132efafd94a
Source noteuspto-grants-2012_04