Triethylamine → HCID 131732384, compound

Participants

Reaction Steps

2-methoxyethyl carbonochloridate (5.08 mg, 0.037 mmol) was added to a solution of 2-((3-((3R,4R)-4-amino-3-((triisopropylsilyl)oxy)piperidin-1-yl)-2-chloro-5-cyanophenyl)amino)-4-(cyclopropylamino)imidazo[2,1-f][1,2,4]triazine-7-carbonitrile (Example 174D, 19 mg, 0.031 mmol) and triethylamine (8.53 μl, 0.061 mmol) in dichloromethane (1 mL) and the reaction solution was stirred at room temperature overnight. More 2-methoxyethyl carbonochloridate (5.08 mg, 0.037 mmol) was added and stirring continued over the weekend, still about 30% SM left. More triethylamine (100 μL) and 2-methoxyethyl carbonochloridate (20 μl) was added and stirred for another day. Reaction close to completion. The reaction mixture was diluted with dichloromethane and washed with cold saturated sodium bicarbonate, the organic layer was dried over magnesium sulfate, filtered and concentrated in vacuo, the crude product was purified by flash chromatography on silica gel using an automated ISCO system (24 g column, eluting with 0-40% ethyl acetate/dichloromethane) to give 2-methoxyethyl ((3R,4R)-1-(2-chloro-5-cyano-3-((7-cyano-4-(cyclopropylamino)imidazo[2,1-f][1,2,4]triazin-2-yl)amino)phenyl)-3-((triisopropylsilyl)oxy)piperidin-4-yl)carbamate (12 mg).

Provenance & Evidence