Sceletium alkaloids. Part 10. Synthesis of 1-substituted cis-bicyclo[4.2.0]octanones through [2+2] cycloadditions of dichloroketene to alkenes. Structural characterization of cycloadducts by oxa-ring expansion
Preparation of unsaturated α,α-dichloro acid chlorides and intramolecular [2 + 2] cycloadditions of the α-chloroketenes reductively generated from them. Effect of double bond geometry on the cycloaddition
作者:Barry B. Snider、Marleen Walner
DOI:10.1016/s0040-4020(01)80143-5
日期:1989.1
Reduction of unsaturatedα,α-dichloracid chlorides with zinc dust in THF at reflux generates an unsaturated α-chloroketene which undergoes an intramolecular [2 + 2] cycloaddition in good yield. This reaction can be used with three carbon tethers to prepare 5-chlorobicyclo[3.2.0]heptan-6-ones and 1-chlorobicyclo[3.1.1]heptan-6-ones but fails with larger tethers. Unsaturated ketenes 18 and 28, with a
Intramolecular [2+2] cycloadditions of ketenes and keteniminium salts to olefins
作者:Istvan Marko、Bruno Ronsmans、Anne Marie Hesbain-Frisque、Stephane Dumas、Leon Ghosez、Beat Ernst、Hans Greuter
DOI:10.1021/ja00293a073
日期:1985.4
On prepare une serie de cetones bicycliques par cycloaddition de cetenes et de sels de ceteneiminium derives d'acides aliphatiques insatures
制备 une serie de cetones bicycliques par cycloaddition de cetenes et de sels de ceteneiminium 衍生 d'acides aliphatiques insatures
Cyclopropanol derivatives as intermediates for organochemical synthesis
作者:Ernest Wenkert、Richard August Mueller、Edward J. Reardon、S. S. Sathe、D. J. Scharf、Giorgio Tosi
DOI:10.1021/ja00728a029
日期:1970.12
Silver(I) ion catalyzed rearrangements of strained .sigma. bonds. XX. Substituent effects on the generation, structural rearrangement, and deargentation of argento carbonium ions. Kinetic and product study of the silver(I)-catalyzed isomerization of C1-functionalized tricyclo[4.1.0.02.7] heptanes
作者:Leo A. Paquette、Gerald Zon
DOI:10.1021/ja00808a034
日期:1974.1
Sceletium alkaloids. Part 11. Aza-ring expansion of cis-bicyclo[4.2.0]octanones and related compounds. A regiospecific synthesis of cis-octahydroindolones
作者:Peter W. Jeffs、Gerado Molina、Nicholas A. Cortese、Peter R. Hauck、Joachim Wolfram