Arylation of Allyl Alcohols in Organic and Aqueous Media Catalyzed by Oxime-Derived Palladacycles: Synthesis of β-Arylated Carbonyl Compounds
作者:Emilio Alacid、Carmen Nájera
DOI:10.1002/adsc.200700301
日期:2007.12.10
oxime-derived palladacycle catalyzes the Mizoroki–Heck reaction of allyl alcohols with aryl iodides, bromides, and chlorides in aqueous and organic solvents. The reaction takes place in the presence of dicyclohexylmethylamine or cesium carbonate as bases, the addition of tetrabutylammonium bromide (TBAB) as additive for aryl bromides and chlorides being necessary. Under these reaction conditions, β-arylated aldehydes
The reactions of trialkylstannylmethyllithium with α,β-epoxyketones afforded mainly cyclopropanols, while α-chloro ketones afforded allyl alcohols and/or cyclopropanols, in varying amounts depending upon the molar ratio of the reagent to the substrate.
THE REACTION OF TRIMETHYLSTANNYLMETHYLLITHIUM WITH ELECTROPHILES
作者:Eigoro Murayama、Toshihiro Kikuchi、Kotaro Sasaki、Norio Sootome、Tadashi Sato
DOI:10.1246/cl.1984.1897
日期:1984.11.5
Trimethylstannylmethyllithium was found to be a versatile reagent for the preparation of 1-alkenes from carbonyl compounds, allyl alcohols from α-chloro ketones, and cyclopropanes from oxiranes.
Studies on the Cu(I)-Catalyzed Regioselective <i>anti</i>-Carbometallation of Secondary Terminal Propargylic Alcohols
作者:Zhan Lu、Shengming Ma
DOI:10.1021/jo0524021
日期:2006.3.31
A highly regioselective Cu(I)-catalyzed anti-carbometallation of secondary terminal propargylicalcohols with 1° alkyl or aryl Grignard reagents affording 2-substituted allylic alcohols was developed. By using this method, optically active allylic alcohols can be prepared from the optically active propargylicalcohols without obvious loss of the enantiopurity. The cyclic organometallic intermediate
A non-enzymatic acetyl transfer-based kinetic resolution of primary allylic amines is reported. The process involves the use of (1S,2S)-1 in conjunction with a supported ammonium salt and affords the corresponding enantio-enriched N-acetylated allylic amines with unprecedented levels of selectivity (s-factors up to 34).