摘要 已发现胆碱氢氧化物(ChOH)是一种绿色高效的碱性离子液体催化剂,可通过以下反应合成高度官能化的吡啶并[2',3':3,4]吡唑并[1,5- a ]嘧啶衍生物。在纯条件下用1 H-吡唑并[3,4- b ]吡啶-3-胺形成的一系列α,β-不饱和酮。一系列α,β高效地将具有不同取代官能团的不饱和酮转化为相应的产物,分离产率高至优异,反应可轻松放大至几克。本发明对环境无害且可重复使用的ChOH催化剂具有几个优点,例如反应时间更短,官能团耐受性范围广以及通过简单的实验和后处理程序即可获得高产率的产物。 图形概要 该方法的主要特点是绿色反应,操作简便,可重复使用,易操作性强,ChOH效率高。
Copper-Catalyzed Oxidative Coupling of Alkenes with Aldehydes: Direct Access to α,β-Unsaturated Ketones
作者:Jing Wang、Chao Liu、Jiwen Yuan、Aiwen Lei
DOI:10.1002/anie.201208920
日期:2013.2.18
Let's get radical: The first copper‐catalyzedoxidative coupling of alkenes and aldehydes was developed. Various aldehydes were utilized as substrates to construct α,β‐unsaturated ketones. A preliminary mechanistic study indicated that this reaction is likely to proceed through a single‐electron transfer.
The present invention provides compositions and formulations that contain active compounds as RNAi inhibitors. These compositions and formulations are useful for controlling insects and pests including mosquitoes and agricultural pests.
NUCLEAR RECEPTOR MODULATORS AND THEIR USE FOR THE TREATMENT AND PREVENTION OF CANCER
申请人:Neckers Jane B.
公开号:US20140171503A1
公开(公告)日:2014-06-19
Disclosed are compounds which are nuclear receptor modulators that can act as antagonists to the androgen receptor, for example, a compound of Formula I: wherein R
1
to R
5
and X
1
to X
5
are as described herein, as well as pharmaceutically acceptable salts, solvates, and stereoisomers thereof. Pharmaceutical compositions comprising such compounds, as well as methods of use, and treatment for cancers, including prostate cancers, other nuclear receptor mediated cancers, and other conditions, are also disclosed.
SMALL MOLECULE INHIBITORS OF RNA SILENCING
申请人:The Regents of the University of California
公开号:US20150010493A1
公开(公告)日:2015-01-08
The present invention provides compositions and formulations that contain active compounds as RNAi inhibitors. These compositions and formulations are useful for controlling insects and pests including mosquitoes and agricultural pests.