Triethylamine → HCID 68629838, Verbindung

Reaktionsgleichung

[CH2:1]([O:5][C:6]([C:8]1[N:13]=[C:12]([C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)[C:11]2[C:20]([CH3:23])=[N:21][S:22][C:10]=2[C:9]=1[OH:24])=[O:7])[CH2:2][CH2:3][CH3:4].[CH3:25][C:26]([CH3:31])([CH3:30])[C:27](Cl)=[O:28].CCN(CC)CC>C(Cl)Cl>[CH2:1]([O:5][C:6]([C:8]1[N:13]=[C:12]([C:14]2[CH:15]=[CH:16][CH:17]=[CH:18][CH:19]=2)[C:11]2[C:20]([CH3:23])=[N:21][S:22][C:10]=2[C:9]=1[O:24][C:27](=[O:28])[C:26]([CH3:31])([CH3:30])[CH3:25])=[O:7])[CH2:2][CH2:3][CH3:4]

Komponenten

Versuchsvorschrift

A mixture of 7-Hydroxy-3-methyl-4-phenyl-isothiazolo[4,5-c]pyridine-6-carboxylic acid butyl ester (1.15 mmol), trimethylacetyl chloride (1.39 mmol), Et3N (1.74 mmol), and CH2Cl2 (5.7 mL) was stirred at r.t. for 2 h. The mixture was then quenched with water and extracted with EtOAc (3×10 mL). The combined organic layers were washed with brine and water, dried over MgSO4, and concentrated in vacuo. The residue was purified by flash chromatography on silica gel. Eluting with 0-20% EtOAc/CH2Cl2 gave the title compound (392.8 mg) as a colorless oil: MS (m/z) 427.2 (M+1).