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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 900926Generated: November 1, 2026

7-Difluoromethyl-5-(4-trifluoromethyl-phenyl)-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid → 7-Difluoromethyl-5-(4-trifluoromethyl-phenyl)-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid [2-chloro-5-(2-hydroxy-ethylsulfamoyl)-thiophen-3-yl]-amide

https://huagongshe.com/reaction/900926

Reaction equation

Participants

RoleNameHCIDCharge
Reactant7-Difluoromethyl-5-(4-trifluoromethyl-phenyl)-pyrazolo[1,5-a]pyrimidine-3-carboxylic acidHCID 66650268—
Reactant4-Amino-5-chloro-thiophene-2-sulfonic acid (2-hydroxy-ethyl)-amideHCID 67218384—
Product7-Difluoromethyl-5-(4-trifluoromethyl-phenyl)-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid [2-chloro-5-(2-hydroxy-ethylsulfamoyl)-thiophen-3-yl]-amideHCID 11997608—

Reaction Steps

The title compound was prepared from 7-difluoromethyl-5-(4-trifluoromethyl-phenyl)-pyrazolo[1,5-a]pyrimidine-3-carboxylic acid (example C. 1) and 4-amino-5-chloro-thiophene-2-sulfonic acid (2-hydroxy-ethyl)-amide (example B.6) according to general procedure II. Yellow solid. MS (ISP) 594.1.2 [(M−H)−]; mp 209° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07361659B2
Source datasetuspto-grants-2008_04
ORD IDord-971788caeac5463bba56d77391a9f0de
Source noteuspto-grants-2008_04