Triethylamine → HCID 57261035, compound

Participants

Reaction Steps

15 g of the (1R*,5S*,8S*)-6-benzyl-8-hydroxy-7-oxo-2-oxa-6-azabicyclo[3.3.0]octane obtained in the step 2 of Example A was added to 300 ml of methylene chloride, and cooled with ice. To this mixture was added 16.3 ml of triethylamine. Then, 7.5 ml of methanesulfonyl chloride was added dropwise thereto, followed by stirring overnight. Thereafter, water and methylene chloride were added to the reaction mixture so as to extract the desired product in an organic layer. After this organic layer was dried over anhydrous magnesium sulfate, the solvent was distilled off under reduced pressure to obtain 20.6 g of (1R*,5S*,8S*)-6-benzyl-8-mesyloxy-7-oxo-2-oxa-6-azabicyclo[3.3.0]octane.

Provenance & Evidence