Unexpected<i>cis</i>-Selectivity in (Sylvestre) Julia Olefinations with Bu<sub>3</sub>Sn-Containing Allyl Benzothiazolyl Sulfones: Stereoselective Synthesis of 1,3-Butadienyl- and 1,3,5-Hexatrienylstannanes
作者:Reinhard Brückner、Achim Sorg
DOI:10.1055/s-2004-837213
日期:——
Bu3Sn-substituted benzothiazolyl sulfones 1c, 1d, and 1f were subjected to Julia olefination reactions with a variety of aldehydes. cis-Selectivities up to 97:3 were obtained by using KHMDS as base in THF.
Modified Julia Olefination on Anhydrides: Extension and Limitations. Application to the Synthesis of Maculalactone B
作者:Nicolas Dussart、Huu Vinh Trinh、David Gueyrard
DOI:10.1021/acs.orglett.6b02160
日期:2016.10.7
esters from cyclic anhydrides is reported using a modifiedJuliaolefination. The reaction is highly stereoselective. The Smiles rearrangement can be performed in a one-pot process, giving a straightforward access to exo-enol lactones. Furthermore, the reaction was extended to semistabilized sulfones, and this methodology was applied to the synthesis of maculalactone B.
Modified Julia Olefination on Pyrrolidinone: Application to the Total Synthesis of Indolizidine 209D
作者:Bastien Raison、Nicolas Dussart、David Gueyrard
DOI:10.1002/ejoc.202200334
日期:2022.7.21
The olefination of Boc-protected lactams was extended to pyrrolidinone using a modifiedJuliaolefination. We also demonstrates that exo-enamides can be easily transformed into indolizidine and this methodology was applied to the total synthesis of natural Indolizidine 209D.
使用改进的 Julia 烯化将 Boc 保护的内酰胺的烯化扩展到吡咯烷酮。我们还证明了外-烯酰胺可以很容易地转化为吲哚里西啶,并且该方法应用于天然吲哚里西啶 209D 的全合成。
Baudin, J. B.; Hareau, G.; Julia, S. A., Bulletin de la Societe Chimique de France, 1993, vol. 130, p. 856 - 878
作者:Baudin, J. B.、Hareau, G.、Julia, S. A.、Lorne, R.、Ruel, O.
DOI:——
日期:——
Fluorinated 1-Phenyl-1<i>H</i>-tetrazol-5-yl Sulfone Derivatives as General Reagents for Fluoroalkylidene Synthesis
作者:Arun K. Ghosh、Barbara Zajc
DOI:10.1021/jo901313k
日期:2009.11.20
Julia−Kocienski olefination reagents 1-fluoropropyl, (cyclopropyl)fluoromethyl, 1-fluoro-2-methyl-2-propenyl, and 1-fluoro-5-hexenyl 1-phenyl-1H-tetrazol-5-yl (PT) sulfones were prepared by metalation followed by electrophilic fluorination. Although metalation−fluorination of n-propyl, 5-hexenyl, and (cyclopropyl)methyl PT-sulfones proceeded under homogeneous conditions, fluorination of 2-methyl-2-propenyl