Methyl iodide → HCID 66635326, compound

Participants

Reaction Conditions

Reaction Steps

250 mg (0.692 mmol) of the compound from example 53 and 190 mg (0.692 mmol) of BEMP were initially charged in 12 ml of dimethylformamide, and a solution of 98 mg (0.692 mmol) of iodomethane in 3 ml of dimethylformamide was added dropwise at 0° C. within 10 min. The mixture was stirred at 0° C. for 20 min. Subsequently, the reaction solution was concentrated under reduced pressure and the residue was purified by means of preparative HPLC (eluent: methanol/aqueous 0.1% ammonia solution=65:35). The residue was stirred with acetonitrile and filtered with suction, and the solids were dried under high vacuum. 78 mg of the title compound (30% of theory) and 50 mg of example 55 were obtained (19% of theory).

Provenance & Evidence