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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 369086Generated: October 24, 2026

4-(Methylsulfonyl)phenylhydrazine hydrochloride → 7-fluoro-2-[1-(4-methylsulfonylphenyl)-3-trifluoromethyl-1H-pyrazol-5-yl]benzothiazole

https://huagongshe.com/en/reaction/369086

Reaction equation

Participants

RoleNameHCIDCharge
Reactant4-(Methylsulfonyl)phenylhydrazine hydrochlorideHCID 2735181—
Reactant1-(7-Fluorobenzothiazol-2-yl)-4,4,4-trifluorobutane-1,3-dioneHCID 23285428—
Product7-fluoro-2-[1-(4-methylsulfonylphenyl)-3-trifluoromethyl-1H-pyrazol-5-yl]benzothiazoleHCID 2328538538%

Reaction Steps

The procedure of Example 9 was repeated using 1-(7-fluorobenzothiazol-2-yl)-4,4,4-trifluorobutane-1,3-dione and 4-methylsulfonylphenylhydrazine hydrochloride as the starting materials to obtain 7-fluoro-2-[1-(4-methylsulfonylphenyl)-3-trifluoromethyl-1H-pyrazol-5-yl]benzothiazole (yield, 38%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06136831
Source datasetuspto-grants-2000_10
ORD IDord-607d6c1936e04d249f9fcb9ac6240744
Source noteuspto-grants-2000_10