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Synthesis and properties of methano-bridged tetradehydro-[26]-, -[28]-, -[30]-, -[32]-, -[34]-, and -[38]-annulene
- Source :
- Journal of the Chemical Society, Perkin Transactions 1. :385
- Publication Year :
- 1988
- Publisher :
- Royal Society of Chemistry (RSC), 1988.
-
Abstract
- Title annulenes (21)-(28) have been synthesized by a Wittig reaction of 1,6-bis-(4-formylbuta-1,3-dienyl)cyclohepta-1,3,5-triene (5) and the vinylogous dicarbaldehydes (6)-(10) with 3-methylpent-2-en-4-ynyl(triphenyl)phosphonium bromide (11) or triphenyl-(3-t-butylpent-2-en-4-ynyl)phosphonium bromide (12), followed by intramolecular oxidative coupling of the resulting acyclic diacetylenes, and their properties are discussed on the basis of 1H n.m.r. and electronic spectra.
Details
- ISSN :
- 13645463 and 0300922X
- Database :
- OpenAIRE
- Journal :
- Journal of the Chemical Society, Perkin Transactions 1
- Accession number :
- edsair.doi.dedup.....389336105d9abb71ef5a2bc70e97f0a6