N,N'-Dimethylethylenediamine → (S)-methyl-3-(5'-fluoro-2,2-dimethyl-2'-oxospiro[cyclopropane-1,3'-indoline]-1'-yl)-5-(2-oxooxazolidin-3-yl)benzoate

Participants

Reaction Conditions

Reaction Steps

A suspension of (R) and (S)-5′-fluoro-2,2-dimethylspiro[cyclopropane-1,3′-indolin]-2′-one (2 mmol) (prepared as in Example 100), methyl-3-bromo-5-(2-oxooxazolidin-3-yl)benzoate (682 mg, 2 mmol), CuI (76 mg, 0.4 mmol), potassium carbonate (545 mg, 4 mmol) and N,N′-dimethyl-ethane-1,2-diamine (86 uL, 0.8 mmol) in acetonitrile (15 mL) was stirred for 16 hours at 90° C. The precipitate was filtered off and washed with ethyl acetate. The filtrate was concentrated in vacuo to afford the title compound as white powder (480 mg, 80%) which was used for the next step without further purification.

Provenance & Evidence