investigated. Convenient syntheses of dihydropleiadene and some of its derivatives are described. The stereochemistry of the dimers and N-phenylmaleimide adducts of pleiadene, acepleiadene and acepleiadylene have been determined by a detailed NMR study; all of the dimers have the anti configuration, while the adducts all have the exo configuration.
Quinodimethane Analogs in the Pleiadene and Acepleiadene Systems
作者:J. W. Lown、A. S. K. Aidoo
DOI:10.1139/v71-304
日期:1971.6.1
12-dihydropleiadene have been synthesized. Their facile hydration to bridged epoxide structures suggests a non-planar boat structure in which they react as dienes. Evidence is presented for the base-catalyzed tautomerization of the former to the 18π peripheral aromatic 5,10-dimethylacepleiadylene. The isoelectronic diketone and methylene ketones in the acepleiadene series similarly tautomerize with potassium