Highly brominated biphenylenes as precursors for the convenient synthesis of 5,6,8,10-tetrabromobenzocyclooctene

  title={Highly brominated biphenylenes as precursors for the convenient synthesis of 5,6,8,10-tetrabromobenzocyclooctene},
  author={Ahmet Tutar and Osman Çakmak and Mehmet Karakaş and Adem Onal and Semra Ĭde},
  journal={Journal of Chemical Research},
  pages={545 - 549}
An efficient synthesis is described of hexabromides 5 and 6 by photobromination of biphenylene (1). Double dehydrobromination of hexabromides 5 and 6 with t-BuOK affords 5,6,8,10-tetrabromobenzocyclooctene (7) in nearly quantitative yield. The tetrabromide 7 is a valuable precursor for the preparation of functionalised substituted benzocyclooctenes (benzo[8]annulenes). 
8 Citations
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A selective and efficient method was developed for the preparation of compound 28 starting from 9,10-dibromoanthracene, in a simple four-step process that reveals the broad range of reactivity and selectivity of the stereoisomeric anthracene derivatives. Expand
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Selective and efficient methods for the preparation of both 2,7,9,10-tetrabromoanthracene 11 and 2,6,9,10-tetrabromoanthracene 12 are described. Photobromination of 2,9,10-tribromoanthracene 8Expand
Mechanistic origins of chemo- and regioselectivity of Ru(II)-catalyzed reactions involving ortho-alkenylarylacetylene, alkyne, and methanol: the crucial role of a chameleon-like intermediate.
The study demonstrates that the chameleon-like mono(carbene) intermediates formed via the intermolecular alkyne-alkyne oxidative coupling play a crucial role to complete the reactions. Expand
Inducing and quantifying forbidden reactivity with single-molecule polymer mechanochemistry.
Single-molecule force spectroscopy studies of three mechanically induced reactions along both their symmetry-allowed and symmetry-forbidden pathways are reported, which enables the first experimental benchmarks for mechanically induced forbidden reactions, and in some cases suggest revisions to prior computational predictions. Expand
9-Bromofenantren’in Bromlanma Şartlarının Belirlenmesi Üzerine Çalışmalar ve Ön Sonuçlar
Amac: Bu calismada fenantren (1) molekulunun brom turevlerinin secici sentezi icin on calisma sonuclari sunulmaktadir. Gerec ve Yontem: Bu amacla, 9-bromfenantren (15), farkli cozucu ortamlarindaExpand


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