A Lewis acid, such as aluminum chloride (AlCl3), iron(III) chloride (FeCl3), or another suitable Lewis acid, is used as a catalyst. The Lewis acid activates the electrophilic centers in the substrate and helps facilitate the intramolecular reaction.
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2-(azocan-1-yl)benzaldehyde
3,4,4a,8a-Tetrahydro-2H,5H-pyrano[2,3-b]pyran
3,5-DIMETHYLINDAN-1-ONE
(S)-2-methyl-N-((S)-2,2,2-trifluoro-1-((S)-5-oxo-2,5-dihydrofuran-2-yl)ethyl)propane-2-sulfinamide
(E)-2-Methoxy-2-(4-nitrophenyl)-4-phenyl-3-butenenitrile
Butanenitrile, 3-oxo-2-(phenylmethylene)-
