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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1905039Generated: October 29, 2026

Methyl fluorosulfate → 5-Cyano-3,4-dichloro-2-methyl isothiazolium fluorosulfonate

https://huagongshe.com/reaction/1905039

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethyl fluorosulfateHCID 9870—
ReactantDichloro-1,2-thiazole-5-carbonitrileHCID 19738264—
Product5-Cyano-3,4-dichloro-2-methyl isothiazolium fluorosulfonateHCID 1288902977%

Reaction Steps

5-Cyano-3,4-dichloroisothiazole (3.6 g, 0.02 mol) and 4 ml of methyl fluorosulfonate were heated at 80°-100° for 11/2 hrs under a nitrogen atmosphere. The resulting solid was washed with ether and benzene to yield 4.5 g (77%) of 5-cyano-3,4-dichloro-2-methyl isothiazolium fluorosulfonate, mp 163-174 (d). Spectral data (NMR and IR) were consistent with the assigned structure.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04841063
Source datasetuspto-grants-1989_06
ORD IDord-bb384efaa1874f739a6806eaca25442e
Source noteuspto-grants-1989_06