반응 #2006461

반응 방정식

4-[(3-(tert-butyl)-1,2,4-thiadiazol-5-yl)oxy]-2,5-dimethylaniline

trimethyl orthoformate

N-ethyl-N-methylamine

→

N′-{4-[(3-(tert-butyl)-1,2,4-thiadiazol-5-yl)oxy]-2,5-dimethylphenyl}-N-ethyl-N-methylimidoformamide

수율 59.0%

반응 조건

후처리

1. 1
   온도heated
2. 2
   온도at reflux for 2 h
3. 3
   기타the solvent is evaporated under vacuum
4. 4
   기타After removing the solvent
5. 5
   기타the crude product is purified by column chromatography (13.4 g, 59% yield, 95% purity, log P (pH 2.3)=2.02)

실험 절차

17.46 g (63.00 mmol) of 4-[(3-(tert-butyl)-1,2,4-thiadiazol-5-yl)oxy]-2,5-dimethylaniline are dissolved in 500 ml of trimethyl orthoformate and heated at reflux for 2 h. After cooling to ambient temperature (AT), the solvent is evaporated under vacuum and the residue is taken up in 630 ml of dichloromethane, treated with 8.65 ml (126.00 mmol) of N-ethyl-N-methylamine and stirred at ambient temperature for 18 h. After removing the solvent, the crude product is purified by column chromatography (13.4 g, 59% yield, 95% purity, log P (pH 2.3)=2.02).

출처