A simple synthesis of gem-bromochlorocyclopropanes via phase-transfer catalysis

Article abstract of DOI:10.1055/s-1991-26592

Substituted 1-bromo-1-chlorocyclopropanes 2 were synthesized from dibromomethane, phenyltrichloromethane trichloride and alkenes 1 in the presence of 60% aqueous potassium hydroxide and tetrabutylammonium hydrogen sulfate as a catalyst (PTC system), in good yields.