Triethylamine → HCID 123820911, compound

Participants

Reaction Steps

To a mixture of the compound (4.70 g) obtained in step (3) above, 4-dimethylaminopyridine (48.2 mg), triethylamine (4.40 mL) and chloroform (63.2 mL), a solution of tert-butyldimethylchlorosilane (2.38 g) in chloroform (31.6 mL) was added dropwise under cooling with ice and the mixture was stirred at the same temperature for 30 minutes, and then at room temperature for three days. The reaction mixture was concentrated under reduced pressure and water and ethyl acetate were then added. Extraction was conducted with ethyl acetate and the combined organic layers were dried over anhydrous magnesium sulfate. The desiccant was removed by filtration and the filtrate was concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography (chloroform:methanol=100:0-98:2) to give the titled compound as a pale yellow oil (4.68 g).

Provenance & Evidence