Cycloadditions to the azulene system have not hitherto been observed. Instead, azulene reacts, e.g., with maleic anhydride via an "addition-substitution route" to give 1-azulenylsuccinic anhydride and with tetracyanoethylene to yield 1-tricy-anovinylazulene[¹]
Aus Pyryliumsalzen (I) und Cyclopentadien-Metallverbindungen (II) lassen sich in einfacher Weise ein...
Aus 1- bzw. 3-α-Hydroxy-, Alkoxy- oder Aminoalkyl-azulenen und komplexen Säuren erhält man 1- bzw. 3...
Two approaches to the azonia-azulenium system are described. In Part I the preparation of a number ...
Cycloadditions to the azulene system have not hitherto been observed. Instead, azulene reacts, e.g.,...
The cyclopentacyclononene derivative (3). the first compound to contain this ring system and also th...
Methyl derivatives of the still unknown hydrocarbon (1a) azuleno[8,8a,1,2-def]heptalene (dicyclohept...
Cycloadditions of nonbenzenoid carbo- and heterocyclic conjugated π-electron systems with suitable ...
Like acenaphthylene (1), the isomeric compound cyclopent- [cd]azulene (2) can also undergo 1,2-cyclo...
Cycloaddition reactions of the azulene system 1 with electron-poor and electron-rich alkynes provide...
Starting from 4,6,8-trimethylazulcne (1) [1], we were able to prepare a non-benzenoid isomer of per...
The cyclopentacyclononene derivative (3). the first compound to contain this ring system and also th...
The first tricyclic [12]annulene with an unsubstituted perimeter, namely the blue hydrocarbon 2, cou...
Ausgehend vorn 4.6.8-Trimethyl-azulen (1) [1] konnten wir das dem Perinaphthylen isomere, nichtbenz...
Eine überraschend einfache Heptalen-Synthese besteht in der Umsetzung von Azulen (1) mit Acetylendic...
Aus Pyryliumsalzen (I) und Cyclopentadien-Metallverbindungen (II) lassen sich in einfacher Weise ein...
Aus 1- bzw. 3-α-Hydroxy-, Alkoxy- oder Aminoalkyl-azulenen und komplexen Säuren erhält man 1- bzw. 3...
Two approaches to the azonia-azulenium system are described. In Part I the preparation of a number ...
Cycloadditions to the azulene system have not hitherto been observed. Instead, azulene reacts, e.g.,...
The cyclopentacyclononene derivative (3). the first compound to contain this ring system and also th...
Methyl derivatives of the still unknown hydrocarbon (1a) azuleno[8,8a,1,2-def]heptalene (dicyclohept...
Cycloadditions of nonbenzenoid carbo- and heterocyclic conjugated π-electron systems with suitable ...
Like acenaphthylene (1), the isomeric compound cyclopent- [cd]azulene (2) can also undergo 1,2-cyclo...
Cycloaddition reactions of the azulene system 1 with electron-poor and electron-rich alkynes provide...
Starting from 4,6,8-trimethylazulcne (1) [1], we were able to prepare a non-benzenoid isomer of per...
The cyclopentacyclononene derivative (3). the first compound to contain this ring system and also th...
The first tricyclic [12]annulene with an unsubstituted perimeter, namely the blue hydrocarbon 2, cou...
Ausgehend vorn 4.6.8-Trimethyl-azulen (1) [1] konnten wir das dem Perinaphthylen isomere, nichtbenz...
Eine überraschend einfache Heptalen-Synthese besteht in der Umsetzung von Azulen (1) mit Acetylendic...
Aus Pyryliumsalzen (I) und Cyclopentadien-Metallverbindungen (II) lassen sich in einfacher Weise ein...
Aus 1- bzw. 3-α-Hydroxy-, Alkoxy- oder Aminoalkyl-azulenen und komplexen Säuren erhält man 1- bzw. 3...
Two approaches to the azonia-azulenium system are described. In Part I the preparation of a number ...
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