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König, Burkhard ; Meijere, Armin de

Synthesis and Diels-Alder Reactions of 1,2-Dimethylene- and 1,2,9,10-Tetramethylene-[2.2]paracyclophane: New Routes to Bridge-Anellated[2.2]Paracyclophanedienes

König, Burkhard and Meijere, Armin de (1992) Synthesis and Diels-Alder Reactions of 1,2-Dimethylene- and 1,2,9,10-Tetramethylene-[2.2]paracyclophane: New Routes to Bridge-Anellated[2.2]Paracyclophanedienes. Chemische Berichte 125 (8), pp. 1895-1898.

Date of publication of this fulltext: 05 Aug 2009 13:51
Article
DOI to cite this document: 10.5283/epub.6149


Abstract

The title compounds 8 and 1 have been synthesized in three steps each from 1,2-dibromo[2.2]paracyclophan-1-ene (2) and 1,2,9,10-tetrabromo[2.2]paracyclophane-1,9-diene (4), respectively. Copper-mediated coupling of vinyl bromides 2 and 4 with methyl- and phenylmagnesium bromide gives substituted [2.2]paracyclophanes 3-CH3, 3-Ph, 5-CH3, and 5-Ph in good yields. The high reactivity of the ...

The title compounds 8 and 1 have been synthesized in three steps each from 1,2-dibromo[2.2]paracyclophan-1-ene (2) and 1,2,9,10-tetrabromo[2.2]paracyclophane-1,9-diene (4), respectively. Copper-mediated coupling of vinyl bromides 2 and 4 with methyl- and phenylmagnesium bromide gives substituted [2.2]paracyclophanes 3-CH3, 3-Ph, 5-CH3, and 5-Ph in good yields. The high reactivity of the [2.2]paracyclophane-1,2-dimethylene moieties in 8 and 1 in Diels-Alder reactions has been verified in cycloadditions with p-benzoquinone to give 10 and 13 and with naphthalene 1,4-endoxide to yield 12.



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Details

Item typeArticle
Journal or Publication TitleChemische Berichte
Publisher:Wiley-VCH
Volume:125
Number of Issue or Book Chapter:8
Page Range:pp. 1895-1898
Date1992
InstitutionsChemistry and Pharmacy > Institut für Organische Chemie > Lehrstuhl Prof. Dr. Burkhard König
Identification Number
ValueType
10.1002/cber.19921250817DOI
KeywordsBisdienes; Diels-Alder reaction with p-benzoquinone; p-Cyclophanes, bridge-anellated
Dewey Decimal Classification500 Science > 540 Chemistry & allied sciences
StatusPublished
RefereedYes, this version has been refereed
Created at the University of RegensburgNo
URN of the UB Regensburgurn:nbn:de:bvb:355-epub-61497
Item ID6149

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