4.1.2. General procedure for the synthesis of BIM oximes
4.1.2.1. Method A e on-water. Indole (2.16 mmol) was added to a stirred solution of Na2CO3 (5.4mmol) inwater (9 mL). Next, oximes 3 (0.54 mmol) in dichloromethane (1.5 mL) were added and the reaction mixture was stirred at room temperature. The progress of the reaction was monitored by TLC and upon completion (2e3h) the mixture was extracted with dichloromethane (3 20 mL), and the combined extracts were dried with anhydrous Na2SO4. The solvent was evaporated to give the crude product, which waspurified by flash chromatography [eluting with ethyl acetate/hexane from (1:2) to (1:1)].