Über die Einwirkung von Halogenen auf Fulvene (Bemerkungen zu der gleichnamigen Arbeit von E. Bergmann und A. Frhrn. von Christiani)

Abstract

1481227. E r n s t B e r g m a n n : Ober die Einwirkung von Halogenen auf Fulvene (Bemerkungen zu der gleichnamigen Arbeit von E. B e r g m a n n und A. Frhm. v o n Christiani)l).

Fulvenes and substituted fulvenes

“…The behavior of ,/3-unsaturated aldehydes and ketones in the condensation with cyclopentadiene and its benzologs has been investigated in some detail (35,218,428,432,433,451). These aldehydes appear to give fulvenes normally.…”

“…LH (CeH5)2C-C^C-C(C6H5)2 c6H5sr=C' -3-phenylindene (CXIX) from CXV and phosphorus pentachloride or acetyl chloride(34,35,446) can be explained by the mechanisms indicated. have been observed: tetraphenylbutatriene (CXII) yields with bromine 2-bromo-3-phenyl-l-benzhydrylideneindene (as CXIX, Br instead of Cl) (454), and tolan is converted by treatment with palladous chloride in ethanol into a mixture of CXVIII and 1-( -ethoxybenzylidene) ~2,3-diphenylindene (CXX), probably via a metalloorganic inter-h i b i t e d .…”