2-Chloroethyl chloroformate → HCID 86716492, compound

Participants

Reaction Conditions

Reaction Steps

247 mg (0.623 mmol) of the compound prepared in Example 9A were initially charged in pyridine (2.5 ml) and dichloromethane (2.5 ml), 64 μl (0.623 mmol) of 2-chloroethyl chloroformate were added at 0° C. and the mixture was stirred at 0° C. for 10 min. After 16 hours of stirring at 20° C., another 64 μl (0.623 mmol) of 2-chloroethyl chloroformate were added, and the mixture was stirred at 20° C. for 16 hours. The reaction mixture was then poured onto ice-water and extracted twice with dichloromethane. The combined organic phases were dried over sodium sulfate, filtered and concentrated. The residue (314 mg) was used for the next step without further purification.

Provenance & Evidence