Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1282218Generated: October 30, 2026

5-Chloro-2-methylphenyl isothiocyanate → 3-(5-Chloro-2-methyl-phenyl)-1-ethyl-1-(1,3,5-trimethyl-1H-pyrazol-4-yl)-thiourea

https://huagongshe.com/reaction/1282218

Reaction equation

Participants

RoleNameHCIDCharge
Reactant5-Chloro-2-methylphenyl isothiocyanateHCID 29519—
ReactantN-Ethyl-1,3,5-trimethyl-1H-pyrazol-4-amineHCID 22335539—
Product3-(5-Chloro-2-methyl-phenyl)-1-ethyl-1-(1,3,5-trimethyl-1H-pyrazol-4-yl)-thioureaHCID 1013188670%

Reaction Steps

Prepared using Method A from 9.33 g (51 mmol) of 5-chloro-2-methyl-phenyl isothiocyanate and 4-ethylamino-1,3,5-trimethylpyrazole (7.2 g, 47 mmol) of step B to give 5.4 g of title compound as a white solid (70% yield, m.p. 144-145° C.).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06455566B1
Source datasetuspto-grants-2002_09
ORD IDord-4438d82d6f7f436b843226fc5b54365d
Source noteuspto-grants-2002_09