carboxylation reaction of allylicC−H bonds of simple alkenes with CO2 is prompted by means of a ketone and a copper complex. The unique carboxylation reaction proceeds through a sequence of an endergonic photoreaction of ketones with alkenes forming homoallyl alcohol intermediates and a thermal copper‐catalyzed allyl transfer reaction from the homoallyl alcohols to CO2 through C−C bond cleavage.
Chemokine receptor antagonists and methods of use therefor
申请人:Luly R. Jay
公开号:US20070060592A1
公开(公告)日:2007-03-15
Disclosed are novel compounds and a method of treating a disease associated with aberrant leukocyte recruitment and/or activation. The method comprises administering to a subject in need an effective amount of a compound represented by:
or physiologically acceptable salt thereof.
Zinc-mediated carboxylations of allylic and propargylic halides in flow: synthesis of β-lactones <i>via</i> subsequent bromolactonization
作者:Patrick J. Sutter、Guowei Kang、Sreekumar Vellalath、Daniel Romo
DOI:10.1039/d2ra07715a
日期:——
Zinc-mediated carboxylation of allylic halides under flow conditions delivered β,γ-unsaturatedcarboxylicacids and subsequent bromolactonization provides a streamlined process for the synthesis of γ-bromo-β-lactones. The described process further demonstrates the utility of organozinc reagents prepared by passage of allylic halides through a metallic zinc column integrated into a flow process. Use
在流动条件下,锌介导的烯丙基卤化物的羧化作用会产生 β,γ-不饱和羧酸,随后的溴内酯化反应为 γ-溴-β-内酯的合成提供了一个简化的过程。所描述的过程进一步证明了通过将烯丙基卤化物通过集成到流动过程中的金属锌柱制备的有机锌试剂的效用。与间歇工艺相比,使用管中管反应器进行高效 CO 2引入可提高转化率并提高 β-内酯的总收率。所描述的流程也适用于炔丙基溴化物,用于合成丙二酸和炔丙酸。
Tricyclic aromatic compounds
申请人:THE WELLCOME FOUNDATION LIMITED
公开号:EP0351887A1
公开(公告)日:1990-01-24
The present invention relates to novel compounds, in particular:
(E)/Z)-3-(2-bromo-6,11-dihydrodibenz[b,e]oxepin-11-ylidene-N,N-dimethylpropylamine;
(E)/(Z)-3-(3-bromo-6,11-dihydrodibenz[b,e]oxepin-11-ylidene)-N,N-dimethylpropylamine;
(E)/(Z)-3-(8-bromo-6,11-dihydrodibenz[b,e]-11-ylidene)-N,N-dimethylpropylamine; and
(E)/(Z)-3-(9-bromo-6,11-dihydrodibenz[b,e]oxepin-11-ylidene) -N,N-dimethylpropylamine.