Up the Hill: Selective Double-Bond Isomerization of Terminal 1,3-Dienes towards Z-1,3-Dienes or 2Z,4E-Dienes
作者:Florian Pünner、Anastasia Schmidt、Gerhard Hilt
DOI:10.1002/anie.201107512
日期:2012.1.27
different cobalt catalyst systems led to the selectiveisomerization of 1,3‐dienes. In the case of the [CoBr2(py‐imine)]‐catalyzed reaction, the Z‐1,3‐diene was formed in a highly selective manner (see scheme). When the catalyst precursor [CoBr2(dpppMe2)] was applied, a double‐bond migration and selectiveisomerizationtowards the 2Z,4E‐configured 2,4‐dienes were observed
Ely, R. J.; Morken, J. P., Journal of the American Chemical Society, 2010, vol. 132, p. 2534 - 2535
作者:Ely, R. J.、Morken, J. P.
DOI:——
日期:——
Regio- and enantioselective catalytic epoxidation of conjugated polyenes. Formal synthesis of LTA4 methyl ester
作者:Sukbok Chang、Nam Ho Lee、Eric N. Jacobsen
DOI:10.1021/jo00077a001
日期:1993.12
The (salen)Mn(III)-catalyzed asymmetric epoxidation reaction exhibits regioselectivity for attack at cis double bonds of conjugated dienes to afford enantiomerically enriched trans-vinyl epoxides as the major products.