A Convenient Method for Olefination of <i>vic</i>-Diols by Lithium Iodide <i>via</i> Cyclic Sulfates
作者:Doo Jang、Yung Joo
DOI:10.1055/s-1997-782
日期:1997.3
Reaction of cyclic sulfates of vic-diols with lithium iodide in acetone produced the corresponding olefins in excellent isolated yields at low temperature. Cyclic sulfates of trans-diols gave trans-alkenes exclusively. Cyclic sulfates of cis-diols gave a mixture of cis- and trans-alkenes. The reaction offers mild conditions and easy work-up procedures.
A Facile Route to Olefins from<i>Vic</i>-Diols<i>Via</i>Cyclic Sulfates with Triphenylphosphine and Iodine
作者:Doo Ok Jang、Yung Hyup Joo、Dae Hyan Cho
DOI:10.1080/00397919708004099
日期:1997.7
Treatment of cyclic sulfates of vic-diols with triphenylphosphine and iodine offers the corresponding olefins in high yields at room temperature. Both cyclic sulfates of d,l-hydrobenzoin and meso-hydrobenzoin give trans-stilbene.
A Convenient Method for the Synthesis of Alkenes from <i>Vic</i>-diols <i>via</i> Cyclic Sulfates with Magnesium Iodide
作者:Doo Ok Jang、Yung Hyup Joo
DOI:10.1080/00032719808006486
日期:1998.3.1
Reaction of cyclic sulfates of vic-diols with magnesium iodide in acetonitrile produced the corresponding olefins in excellent isolated yields at room temperature. Cyclic sulfates of trans-diols gave trans-alkenes exclusively. Cyclic sulfates of cis-diols gave a mixture of cis- and trans-alkenes. However, the cyclic sulfate of cyclic cis-diol afforded the corresponding cis-alkene only.
Enantioselective synthesis of the Taxol and Taxotere side chains
作者:Ari M. P. Koskinen、Esko K. Karvinen、Jussi P. Siirilä
DOI:10.1039/c39940000021
日期:——
A new route to Taxol and Taxotere sidechains via asymmetric dihydroxylation of both cis and trans methyl cinnamates is described.