The synthesis of tricarbonyl(2,4-cycloheptadiene-1,6-dione)iron and tricarbonyl(2,4-cyclooctadiene-1,6-dione)iron
作者:Noboru Morita、Shunji Ito、Toyonobu Asao
DOI:10.1016/0022-328x(93)80359-j
日期:1993.11
Tricarbonyl(6-hydroxy-2,4-cycloheptadien-1-one)iron derived from tricarbonyl(tropone)iron was easily oxidized to give tricarbonyl(2,4-cycloheptadiene-1,6-dione)iron. This procedure was also extended to tricarbonyl(2-substituted tropone)iron and exo(bicyclo[5.1.O]octa-3,5-dien-2-one)tricarbonyliron to yield tricarbonyl(2-substituted 2,4-cycloheptadiene-1,6-dione)iron and tricarbonyl(2,4-cyclooctadiene-1
Intramolecular diels-alder reaction with inverse electron demand in 2-(2,3-diphenylcyclopropen-1-YL)-β-tropolone. Construction a bridged semibullvalene-type carbon skeleton
An etheno-bridged semibullvalene-type carbon skeleton has been synthesized in one pot reaction via the intramolecularDiels-Alderreaction of 2-(2,3-diphenylcyclopropen-1-yl)-β-tropolone generated in situ from the reaction of lithium β-tropolonate with diphenylcyclopropenium ion. X-ray analysis of the adduct disclosed that the (Ph)CC(Ph) bond is longer than the other cyclopropane bonds.