Журнал "Макрогетероциклы"

Sergei M. Pluzhnik-Gladyr and Sergei A. Kotlyar^@

A.V. Bogatsky Physico-Chemical Institute of National Academy of Sciences of Ukraine, Odessa, 65080, Ukraine

^@Corresponding author E-mail: kotlyar_sk@mail.ru

In the conditions of mechanochemical activation and without the solvent cis-syn-cis-isomer of dicyclohexano-18-
crown-6, 4I-bromobenzo-18-crown-6, 5,5I-dibromoderivatives of proximal [0.6]biphenyl-20-crown-6 and [1.5]dibenzo-
18-crown-6 form complexes with potassium chlorochromate (KCrO3Cl) with ratio of 1:1 and 87-99% yields. At the
same time, reactivity of the cis-anti-cis-isomer of dicyclohexano-18-crown-6 is considerably lower: the yield of the
(1:1) complex in the similar conditions is only 10%, and benzo-18-crown-6 and [3.3]dibenzo-18-crown-6 do not take
part in the reaction.