Process for selective preparation of macrocyclic polyethers

Details Process for selective preparation of macrocyclic polyethers Process for selective preparation of macrocyclic polyethers

1975-05-27

1976-12-14

Milestone, Norma S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D32300

Patent

active

039975630

ABSTRACT:
Cyclic polyethers of the general formula ##STR1## IN WHICH N IS AN INTEGER FROM 3 - 11, PARTICULARLY FROM 4 - 6, ARE PREPARED BY OLIGOMERIZATION OF ETHYLENE OXIDE IN THE PRESENCE OF BORON TRIFLUORIDE, PHOSPHORUS PENTAFLUORIDE OR ANTIMONY PENTAFLUORIDE AS CATALYST, AND IN THE PRESENCE OF FLUOBORATE, FLUOPHOSPHATE OR FLUOANTIMONATE SALTS OF ALKALI METALS, ALKALINE EARTH METALS OR TRANSITION METALS, TO FORM COMPLEXES BETWEEN THE POLYETHERS FORMED AND SAID SALTS, SEPARATING THE COMPLEXES FROM THE REACTION MIXTURE AND LIBERATING THE POLYETHERS FROM THE COMPLEXES.

REFERENCES:
J. Dale et al., Acta. Chem. Scand., Ser. B (1974), 28(3) pp. 378-379.

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