PALLADIUM-CATALYZED ALLYLATION OF KETONES AND ALDEHYDES WITH ALLYLIC CARBONATES VIA SILYL ENOL ETHERS UNDER NEUTRAL CONDITIONS
作者:Jiro Tsuji、Ichiro Minami、Isao Shimizu
DOI:10.1246/cl.1983.1325
日期:1983.8.5
Silyl enol ethers are converted to 2-allyl ketones and aldehydes by the reaction with allylic carbonates in the presence of a palladium-phosphine catalyst.
Re-Evaluating the Nucleophilicity of Zinc Enolates in Alkylation Reactions
作者:Gopala K. Jarugumilli、Chunyin Zhu、Silas P. Cook
DOI:10.1002/ejoc.201200067
日期:2012.3
The use of toluene allows for allylic and benzylic alkylation of zinc enolates, derived from an asymmetriccopper-catalyzed conjugate addition of dialkylzinc, using a range of valuable electrophiles. The one-pot procedure avoids the use of additional transition-metal catalysts and does not require highly activated electrophiles.
A Simple, Nontoxic Iron System for the Allylation of Zinc Enolates
作者:Gopala K. Jarugumilli、Silas P. Cook
DOI:10.1021/ol200059u
日期:2011.4.15
Diironnonacarbonyl in combination with triphenylphosphine has been identified as a low-cost and environmentally benign catalyst system for the allylation of zinc enolates generated in situ from copper-catalyzed asymmetric conjugate addition reactions. The catalyst system provides the allylated product in modest to good yields at room temperature with unprecedented diastereoselectivity in cyclic enone