Pyrrolidine → Z-6-Chloro-3-[5-chloro-2-(3-methyl-oxetan-3-ylmethoxy)-benzylidene]-1,3-dihydro-indol-2-one

Participants

Reaction Conditions

Reaction Steps

To the mixture of 5-chloro-2-(3-methyl-oxetan-3-ylmethoxy)-benzaldehyde (2 g, 8.3 mmol) and 6-Chloro-1,3-dihydro-indol-2-one (1.27 g, 7.6 mmol) in methanol (20 mL) was added pyrrolidine (0.6 g, 9.1 mmol) dropwise. The mixture was then heated at 70° C. for 2 h. After cooled to room temperature, the mixture was filtered and resulting precipitate was collected, dried to give title compound as a yellow solid (2.3 g).

Provenance & Evidence