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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1607696Generated: October 25, 2026

Hydrochloric Acid → HCID 178505001, compound

https://huagongshe.com/reaction/1607696

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantAmmonium ChlorideHCID 25517—
ReactantSodium AzideHCID 33557—
ReactantN-[4-cyano-2-(2,4-difluorophenoxy)phenyl]methanesulfonamideHCID 10358871—
SolventDimethylformamideHCID 6228—
ProductHCID 178505001HCID 17850500196.7%

Reaction Conditions

Temperature110 °C

Reaction Steps

A mixture of 4'-cyano-2'-(2,4-difluorophenoxy)methanesulfonanilide (2.1 g), sodium azide (0.5 g) and ammonium chloride (0.43 g) in N,N-dimethylformamide (10 ml) was stirred for 6 hours at 110° C. The mixture was poured into a mixture of ice and diluted hydrochloric acid, and extracted with ethyl acetate. The extract was washed with water, dried and concentrated in vacuo. The residual crystals were recrystallized from ethyl acetate to give colorless crystals of 2'-(2,4-difluorophenoxy)-4'-(5-tetrazolyl)methanesulfonanilide (2.3 g).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04866091
Source datasetuspto-grants-1989_09
ORD IDord-cbf3f629030c428d8c405179edcf0277
Source noteuspto-grants-1989_09