Methyl derivatives of the still unknown hydrocarbon (1a) azuleno[8,8a,1,2-def]heptalene (dicyclohept[cd-ij]azulene) can be prepared by a simple process that has already repeatedly proved its value for preparation of polycyclic condensed non-benzenoid systems[¹]
Reaction of dimethyl acetylenedicarboxylate 2a with azulene 1 (boiling tetralin, 207.6 °C) leads to ...
Starting from 4,6,8-trimethylazulcne (1) [1], we were able to prepare a non-benzenoid isomer of per...
Alkyl and aryl derivatives [¹] of cyclopent[cd]azulene (1) exhibit a notable reactivity in cycloadd...
Methyl derivatives of the still unknown hydrocarbon (1a) azuleno[8,8a,1,2-def]heptalene (dicyclohept...
Cycloaddition reactions of the azulene system 1 with electron-poor and electron-rich alkynes provide...
Like acenaphthylene (1), the isomeric compound cyclopent- [cd]azulene (2) can also undergo 1,2-cyclo...
Similarly to pentalene, azulene[¹], and cyclopent[cd]azulene[²], the readily accessible aceheptylen...
The first tricyclic [12]annulene with an unsubstituted perimeter, namely the blue hydrocarbon 2, cou...
Cycloadditions of nonbenzenoid carbo- and heterocyclic conjugated π-electron systems with suitable ...
The properties of isomeric azulene derivatives, substituted through the 5-membered ring, were examin...
The two lowest homologs of the annulene series, i. e. cyclobutadiene and benzene, are known to under...
The cyclopentacyclononene derivative (3). the first compound to contain this ring system and also th...
Cycloadditions to the azulene system have not hitherto been observed. Instead, azulene reacts, e.g.,...
The non-benzenoid aromatic system azulene is sufficiently nucleophilic at C1 that it can react with ...
Reaction of dimethyl acetylenedicarboxylate 2a with azulene 1 (boiling tetralin, 207.6 °C) leads to ...
Starting from 4,6,8-trimethylazulcne (1) [1], we were able to prepare a non-benzenoid isomer of per...
Alkyl and aryl derivatives [¹] of cyclopent[cd]azulene (1) exhibit a notable reactivity in cycloadd...
Methyl derivatives of the still unknown hydrocarbon (1a) azuleno[8,8a,1,2-def]heptalene (dicyclohept...
Cycloaddition reactions of the azulene system 1 with electron-poor and electron-rich alkynes provide...
Like acenaphthylene (1), the isomeric compound cyclopent- [cd]azulene (2) can also undergo 1,2-cyclo...
Similarly to pentalene, azulene[¹], and cyclopent[cd]azulene[²], the readily accessible aceheptylen...
The first tricyclic [12]annulene with an unsubstituted perimeter, namely the blue hydrocarbon 2, cou...
Cycloadditions of nonbenzenoid carbo- and heterocyclic conjugated π-electron systems with suitable ...
The properties of isomeric azulene derivatives, substituted through the 5-membered ring, were examin...
The two lowest homologs of the annulene series, i. e. cyclobutadiene and benzene, are known to under...
The cyclopentacyclononene derivative (3). the first compound to contain this ring system and also th...
Cycloadditions to the azulene system have not hitherto been observed. Instead, azulene reacts, e.g.,...
The non-benzenoid aromatic system azulene is sufficiently nucleophilic at C1 that it can react with ...
Reaction of dimethyl acetylenedicarboxylate 2a with azulene 1 (boiling tetralin, 207.6 °C) leads to ...
Starting from 4,6,8-trimethylazulcne (1) [1], we were able to prepare a non-benzenoid isomer of per...
Alkyl and aryl derivatives [¹] of cyclopent[cd]azulene (1) exhibit a notable reactivity in cycloadd...
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