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Communication | Regular issue | Vol 24, No. 5, 1986, pp.1203-1204
Published online, 1st January, 1970
DOI: 10.3987/R-1986-05-1203
Synthesis of Cryptands under High Pressure. The Role of Solvent and Leaving Group in Double Quaternization Reactions

Marek Pietraszkiewicz, Piotr Salanski, Ryszard Ostaszewski, 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


The rate of double quaternization reaction of N,N’-dimethyldiazacoronand (1) with bis(2-iodoethyl) ether (2a) under high pressure strongly depends on solvent polarity. The nature of the leaving group in bis(2-halogenoethyl) ethers (2a-c) or in bis(2-tosyloxyethyl) ether (2d) influences the rate of double quaternization reaction.