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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2196818Generated: November 1, 2026

Methanol → HCID 66660824, compound

https://huagongshe.com/reaction/2196818

Reaction equation

Participants

RoleNameHCIDCharge
ReactantMethanolHCID 887—
Reactant2-Amino-5-methylthiazoleHCID 351770—
ReactantHCID 7303349HCID 7303349—
CatalystTetrabutylammonium IodideHCID 67553—
SolventDimethylformamideHCID 6228—
SolventDichloromethaneHCID 6344—
ProductAmmonium HydroxideHCID 14923—
ProductHCID 66660824HCID 66660824102.8%

Reaction Conditions

Temperature85 °C

Reaction Steps

A mixture of 2-(4-methylthiazol-5-yl)ethyl 4-methylbenzenesulfonate (3.23 g, 10.9 mmol), 2-amino-5-methylthiazole (1.25 g, 10.9 mmol) and tetrabutyl ammonium iodide (2 g, 5.4 mmol) in N,N-dimethylformamide (2 mL) was warmed to 85° C. and was stirred for 18 h. The mixture was cooled to ambient temperature, was diluted with CH2Cl2 (10 mL) and was quenched with 10% NaOH (5 mL). The layers were separated and the aqueous layer was extracted with CH2Cl2 (3×5 mL). The combined organics were dried over anhydrous Na2SO4, filtered, concentrated under reduced pressure and purified via column chromatography (SiO2, 10% methanol in ethyl acetate then 9:1:0.1 CH2Cl2:methanol:ammonium hydroxide) to give the title compound (1.34 g, 5.6 mmol, 51% yield). MS (DCI/NH3) m/z 240 (M+H)+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08338467B2
Source datasetuspto-grants-2012_12
ORD IDord-443a897075fa483eb1a47eeacef5fd87
Source noteuspto-grants-2012_12