Water → 8-((S)-2,2-Dimethyl-[1,3]dioxolan-4-yl methoxy)-6,6-dimethyl-11-oxo-6,11-dihydro-5H-benzo[b]carbazole-3,4-dicarbonitrile

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Reaction Conditions

Reaction Steps

Under nitrogen atmosphere, 4-bromo-8-((S)-2,2-dimethyl-[1,3]dioxolan-4-yl methoxy)-6,6-dimethyl-11-oxo-6,11-dihydro-5H-benzo[b]carbazole-3-carbonitrile (Compound U6, 20.0 mg, 40.37 μmol) was dissolved in DMA (0.35 mL), added with copper (I) cyanide (18.1 mg, 201.9 μmol), and stirred at 200° C. for 1 hr under irradiation with microwave. The reaction solution was poured into water, extracted with ethyl acetate, washed with water and saturated brine, dried over sodium sulfate, and then filtered. The residues obtained after concentration under reduced pressure were purified by silica gel column chromatography (ethyl acetate/hexane) to obtain the title compound as a crude product.

Provenance & Evidence