1-(5-Fluoro-2-methylphenyl)-3-trimethylsilyoxy-2-aza-1,3-butadiene → 6-chloro-4'-[5-chloro-2-(4-methoxy-phenoxy)-phenyl]-2'-(5-fluoro-2-methyl-phenyl)spiro[3H-indole-3,3'-piperidine]-2,6'(1H)-dione

Participants

Reaction Steps

In a manner similar to the method described in Example 1e, E/Z-6-chloro-3-[5-chloro-2-(4-methoxy-phenoxy)-benzylidene]-2-oxo-2,3-dihydro-indole-1-carboxylic acid tert-butyl ester (5 g, 10 mmol) was reacted with 1-(5-fluoro-2-methyl-phenyl)-3-trimethylsilyoxy-2-aza-1,3-butadiene (50 mmol) in toluene to give the title compound as a white solid (160 mg).

Provenance & Evidence