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■ High-pressure Synthesis of Cryptands with Aliphatic Bridging Units

Marek Pietraszkiewicz, Piotr Salanski, and Janusz Jurczak*

*Institute of Organic Chemistry, Polish Academy of Sciences, ul. Kasprzaka 44/52, P.O.Box 58, PL-01-224 Warszawa 42, Poland

Abstract

N,N’-Dimethyl diazacoronands react with α,ω-diiodoalkanes under high pressure (10 kbar) to give the bis-quaternary salts which are transformed into cryptands via demethylation with triphenylphosphine.