Collect. Czech. Chem. Commun.
1982, 47, 838-842
https://doi.org/10.1135/cccc19820838
Intermolecular cyclization of o-fuchsones
Milena Píšová and Milan Souček
Institute of Organic Chemistry and Biochemistry, Czechoslovak Academy of Sciences, 166 10 Prague 6
Abstract
o-Fuchsones formed by dehydrohalogenation of o-hydroxyaryl(diaryl)methyl chlorides with tertiary amines undergo a cyclization to eight-membered dimers of the type head to tail. The dimerization reaction is catalyzed by tertiary amines hydrochlorides involving very likely triarylmethyl cation as intermediates.
