Synthesis of 4,4'-Bis(dialkoxyphosphoryl)biphenyl-18-crown-6

摘要

Phosphorus-containing macrocycles (crown ethers) are promising objects for potential application in supramolecular and synthetic organic chemistry. Dibenzocrown ethers occupy a significant place in the macrocycle chemistry due to a comparative ease of preparation and wide possibilities for synthesis of various derivatives. Dibenzocrown ethers are promising blocks for receptor design by incorporation of two exocyclic coordinating groups capable of binding "mild" cations of transition metals or organic molecules to the symmetrically placed aromatic rings [1-6]. Exocyclic coordination centers of this kind can be the phosphoryl group oxygen atoms possessing an expressed affinity toward transition metal cations and proton donating organic molecules. Phosphoryl groups enter into the structures of many complexing agents and extragents and also they perform an important function in various biochemical processes [7-9].