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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 598514Generated: October 31, 2026

Hydrochloric Acid → 2(3H)-Benzothiazolethione, 6,7-dichloro-

https://huagongshe.com/reaction/598514

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantPotassium ethylxanthateHCID 2735045—
Reactant3,4-Dichloro-2-fluoroanilineHCID 2782703—
SolventWaterHCID 962—
SolventDimethylformamideHCID 6228—
Product2(3H)-Benzothiazolethione, 6,7-dichloro-HCID 17852779192%

Reaction Conditions

Temperature95 °C

Reaction Steps

A mixture of 1.5 g (8.33 mmol) 3.4-dichloro-2-fluoroaniline and 1.64 g (10.00 mmol) potassium ethylxanthogenate in 8 mL dry N,N-dimethylformamide was heated in a 95° C. oil bath for 5 h. The reaction mixture was cooled to room temperature and diluted with water (25 mL). The mixture was acidified with aqueous HCl 2N. The precipitate was collected by filtration, washed with water and dried to provide 1.8 g (92%) of the title compound as a white solid. MS(m/e): 233.8 (M−H+).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07897627B2
Source datasetuspto-grants-2011_03
ORD IDord-88f96fc5bfa742dfbcd4c125c62a6cc8
Source noteuspto-grants-2011_03