3-(2-Acylamino-1-Hydroxyethyl)-Morpholine Derivatives and Their Use as Bace Inhibitors
申请人:Broughton Barff Howard
公开号:US20070225267A1
公开(公告)日:2007-09-27
The present invention provides BACE inhibitors of Formula (I); methods for their use and preparation, and intermediates useful for their preparation.
本发明提供了化学式(I)的BACE抑制剂;以及它们的使用和制备方法,以及用于它们制备的中间体。
<i>N</i>,<i>N</i>-Dimethylformamide-stabilised palladium nanoparticles combined with bathophenanthroline as catalyst for transfer vinylation of alcohols from vinyl ether
We report N,N-dimethylformamide-stabilised Pd nanoparticle (Pd NP)-catalysed transfervinylation of alcohols fromvinyl ether. Pd NPs combined with bathophenanthroline exhibited high catalytic activity. This reaction proceeded with low catalyst loading and the catalyst remained effective even after many rounds of recycling. The observation of the catalyst using transmission electron microscopy and
Palladium-catalyzed oxidation of vinyl ether to acetate with hydrogen peroxide
作者:Yoshihiro Kon、Takefumi Chishiro、Daisuke Imao、Takuya Nakashima、Takashi Nagamine、Houjin Hachiya、Kazuhiko Sato
DOI:10.1016/j.tetlet.2011.10.015
日期:2011.12
The selective hydrogen peroxide oxidation of vinylethers to give acetates was developed using triphenylphosphine palladium and triethyl amine catalysts under mild reaction conditions.
A process for producing a high-purity vinyl ether, which comprises:
a step of subjecting an alcohol represented by the general formula (1)
R—O—H (1)
to a vinyl ether formation reaction in the presence of a catalyst to synthesize a vinyl ether represented by the general formula (2),
R—O—CH═CH
2
(2)
a step of removing the catalyst from the reaction mixture obtained in the above step to obtain a crude vinyl ether containing the vinyl ether and the unreacted raw material alcohol,
a step of reacting the unreacted raw material alcohol in the crude vinyl ether, with the vinyl ether in the presence of an acid catalyst, to convert the alcohol into an acetal represented by the general formula (3),
and
a step of subjecting a crude vinyl ether containing the acetal (III) to distillation to obtain a high-purity vinyl ether.
A Facile One-Pot Synthesis of Symmetrical and Unsymmetrical Acetaldehyde Acetals from Primary Alcohols
作者:Rodney Kiplin Guy、Richard Anthony DiPietro
DOI:10.1080/00397919208019270
日期:1992.3
alcohol 1 with ethyl vinyl ether in the presence of mercury (11) acetate followed by treatment with the same or a different alcohol in the presence of p-toluenesulfonic acid affords the symmetrical and unsymmetrical acetaldehyde acetals 3 in good overall yield. The method is easily scaled up and represents a significant improvement over currently available procedures.