Anisole → HCID 141560923, compound

Participants

Reaction Steps

A solution of aluminum chloride (82 mg, 0.612 mmol) in nitromethane (1 mL) was added rapidly to a stirred, cooled (ice/H2O bath) solution of diphenylmethyl 7-[2-(2-aminothiazol-4-yl)-(Z)-2-methoxyiminoacetamido]-3-(2-benzyloxy-3,4-dioxo-1-cyclobutenyl)-3-cephem-4-carboxylate (50 mg, 0.068 mmol) and anisole (66 mg, 0.612 mmol) in CH2Cl2 (1 mL). The mixture was stirred with cooling for 0.33 hr and then for 2 hrs at ambient temperatures. The solution was cooled and diluted with dilute aqueous hydrochloric acid to precipitate a solid which was collected and discarded. The aqueous filtrate was washed with ethyl acetate. The aqueous layer was applied to a Michel-Miller HPLPLC column (22×130 mm) containing Partisil Prep 40 ODS-3. The column was eluted with a mixture of H2O-acetonitrile-acetic acid (90:10:0.5). The appropriate fractions were combined and the organic solvents removed. Lyophilization of the aqueous solution afforded the title compound (2.5 mg, 7.7 % yield) as a bright yellow solid.

Provenance & Evidence