Photochemistry of benzotricyclo[3.2.0.02,7]heptene: Singlet excited state reactions derived from cyclopropane ring clevage
作者:Richard P. Johnson、Katherine Schlimgen Davis
DOI:10.1016/s0040-4039(01)81855-4
日期:1981.1
Direct irradiation of the title hydrocarbon in cyclohexane affords 2-vinylindene and benzonorcaradiene as major primary photoproducts. Deuterium labeling is used to determine reaction mechanisms
1,4-Dienes were prepared by the homo-1,4-elimination of αα′-dihydroxy derivatives of cyclopropanes with diphosphorustetraiodide in the presence of pyridine.
作者:Paolo Piacentini、Tanner W. Bingham、David Sarlah
DOI:10.1002/anie.202208014
日期:2022.9.5
A missing link between dearomative cyclopropanation and ringexpansion of polycyclic (hetero)arenes has been established by utilizing an arenophile-based strategy. This two-step protocol enables the direct conversion of aromatic compounds into (aza)benzocycloheptatrienes, which are important structural motifs in natural products and biologically active compounds.