Journal
TETRAHEDRON
Volume 58, Issue 13, Pages 2551-2567Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0040-4020(02)00143-6
Keywords
phosphatetraepoxyarmulenes; difurylphosphanes; heteromacrocycles; Wittig reaction; semiempirical calculations
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Several 5,16-dialkyl(diaryl)-5,16-dihydro-5,16-diphospha-tetraepoxy[22]annulenes(2.1.2.1) 9 as possible precursors of aromatic 5,16-diphospha-tetraepoxy[22]annulenes(2.1.2.1) 8 are synthesized by cyclizing Wittig-reactions of the phosphane dialdehydes 15 with the bis-ylids of the phosphane-bisphosphoniumsalts 19. (C) 2002 Elsevier Science Ltd. All rights reserved.
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