Oligoethyl ether derivatives of ester functionalised nickel(II) macrocycles

M.J. Hardie, N. Malic, P.J. Nichols, Colin Raston

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gamma,gamma'-Ester functionalisation of the macrocycle 5,7,12,14-tetramethyldibenzo[b,i]- 1,4,8,11 -tetraazacyclotetradecinenickel-(II) (Ni(TMTAA)), using two alternative methods, either based on oxalyl chloride or 'triphosgene', has been effective in the synthesis of novel cyclic crown ether-type molecules containing a rigid, saddle shaped nickel(II) macrocycle and an oligoethyl ether chain. Mono-ester derivatisation using triphosgene allows access to compounds with two Ni(TMTAA) units bridged by oligoethyl ethers of various chain length. (C) 2001 Elsevier Science Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)8075-8079
JournalTetrahedron Letters
Publication statusPublished - 2001


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