Thionyl Chloride → HCID 66628553, compound

Participants

Reaction Conditions

Reaction Steps

225 μL of thionyl chloride was added to 300 mg of (1R,2R,3R,5R,6R)-2-amino-3-(3,4-dichlorobenzyloxy)-6-fluorobicyclo[3.1.0]hexane-2,6-dicarboxylic acid suspended in 4 mL of pentanol at ice-cooling, and the mixture was stirred for 3 hours at 50° C. After standing to cool, the reaction solution was concentrated to about 1 mL under reduced pressure, 200 mL of hexane was added thereto, and the mixture was stirred for 12 hours. After the precipitated solids were filtered, the residue was purified by reverse phase column chromatography (Wako gel 50C18 (made by Wako Pure Chemical Industries Ltd.), eluent:water to a 50% aqueous solution of acetonitrile), thereby yielding 188 mg of (1R,2R,3R,5R,6R)-2-amino-3-(3,4-dichlorobenzyloxy)-6-fluorobicyclo[3.1.0]hexane-2,6-dicarboxylic acid 6-pentyl ester.

Provenance & Evidence