Synthesis of Benz[a]azulenes Substituted
โ
Reza-Ali Fallahpour; Hans-Jรผrgen Hansen
๐
Article
๐
1995
๐
John Wiley and Sons
๐
German
โ 490 KB
## Abstract It is shown that the thermal electrocyclic ringโclosure reaction of 1,2โdi[(__E__)โpropโ1โenyl]benzene to yield 2,3โdimethylnaphthalene (__cf. Scheme 1__) [10] can successfully be applied also to the synthesis of benz[__a__]azulenes (__cf. Schemes 2__ and __3__). Starting materials are