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Preparation of macrocyclic ether–esters, thioether–esters, and ether–thiolesters

L. Hansen, R. M. Izatt, J. Bradshaw, 1976 .

Macrocyclic polyether sulfide syntheses. Preparation of thia(crown-6, -7, and -8) compounds

R. Reeder, R. M. Izatt, J. Bradshaw, 1976 .