Activation of Vinyl Iodides for the Highly Enantioselective Addition to Aldehydes
作者:Albert M. DeBerardinis、Mark Turlington、Lin Pu
DOI:10.1002/anie.201007351
日期:2011.3.1
tolerant: Vinylzinc reagents were directly prepared from the reaction of vinyliodides with ZnEt2 under mild reaction conditions. The compound (S)‐1 was found to catalyze the addition of the vinylzinc reagents to a variety of aldehydes to generate structurally diverse allylic alcohols with high yields and enantioselectivities. This catalytic process can tolerate functional groups such as esters, chlorine
The reaction of vinyl phosphates with iodotrimethylsilane: Synthesis of vinyl iodides from ketones
作者:Koo Lee、David F. Wiemer
DOI:10.1016/s0040-4039(00)60434-3
日期:1993.4
A new method for preparation of vinyl iodides fromketones is described, based on the reaction of vinyl phosphates with iodotrimethylsilane.
基于磷酸乙烯基酯与碘代三甲基硅烷的反应,描述了一种由酮制备碘化乙烯的新方法。
A practical synthetic method for vinyl chlorides and vinyl bromides from ketones via the corresponding vinyl phosphate intermediates
作者:Katsuhide Kamei、Noriko Maeda、Toshio Tatsuoka
DOI:10.1016/j.tetlet.2004.11.075
日期:2005.1
A new synthetic method for the preparation of vinyl chlorides and vinylbromidesfromacyclic and cyclic ketones is described. Vinyl halides are practically obtained from the corresponding vinyl phosphate intermediates with triphenylphosphine dihalide.
Asymmetric Oxidation of Enol Derivatives to α-Alkoxy Carbonyls Using Iminium Salt Catalysts: A Synthetic and Computational Study
作者:Philip C. Bulman Page、Saud M. Almutairi、Yohan Chan、G. Richard Stephenson、Yannick Gama、Ross L. Goodyear、Alice Douteau、Steven M. Allin、Garth A. Jones
DOI:10.1021/acs.joc.8b02354
日期:2019.1.18
We report herein the first examples of asymmetricoxidation of enol ether and ester substrates using iminium salt organocatalysis, affording moderate to excellent enantioselectivities of up to 98% ee for tetralone-derived substrates in the α-hydroxyketone products. A comprehensive density functional theory study was undertaken to interpret the competing diastereoisomeric transition states in this example
Photostimulated Reactions of Vinyl Phosphate Esters with Triorganostannides. Evidence for an S<sub>RN</sub>1 Vinylic Mechanism
作者:Alicia B. Chopa、Viviana B. Dorn、Mercedes A. Badajoz、María T. Lockhart
DOI:10.1021/jo049762t
日期:2004.5.1
yields (45−89%). On the other hand, there is no reaction between (1-cyclohexenyl)DEP (5) or (1-benzylvinyl)DEP (18) with either 1 or 2, under similar conditions. These reactions appear to be strongly dependent on structural features of the vinyl phosphate since only conjugated vinyl phosphates afforded substitution products. These substitution reactions are completely regioselective and stereoconvergent