Synthesis of novel benzene bridged polyalkynylazulenes

Tetrahedron Letters

Volumn 41, Issue 21, 2000, Pages 4079-4083

  Elwahy, Ahmed H M ^a   Hafner, Klaus ^a  

^a DARMSTADT UNIVERSITY OF TECHNOLOGY   (Germany)

Author keywords

Ethynylazulenes; Pd Cu catalyst; Polyazulenylethynylbenzenes

Indexed keywords

ALKYNYL GROUP; AZULENE DERIVATIVE; BENZENE DERIVATIVE;

ARTICLE; CHEMICAL REACTION; CHEMICAL STRUCTURE; REACTION ANALYSIS; SPECTRAL SENSITIVITY; STEREOSPECIFICITY; SYNTHESIS;

EID: 0034729361     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4039(00)00577-3     Document Type: Article

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21. 2/n-hexane (1:5 for compounds 3 and 11), (1:3 for compounds 5, 12 and 14) and (1:2 for compounds 7 and 15) as eluents.
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24. 6 which show that the two phenyl groups of substituents at ortho-position are distorted from the central benzene at least by 36.2°, also assumes a diminished planarity of 5 and 7.
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26. +) system was recorded at 710 mV with an error of±10 mV versus Ag/AgCl. All measurements were recorded at v=200 mV/s.
27. All described new compounds gave correct elemental analyses.
28. 3 with tetramethylsilane as internal standard. UV-vis spectra were recorded with a Beckman UV-5240 spectrometer. Mass spectra (MS) were obtained with a Varian 311A instrument.