Investigation of 1-bromo-3-buten-2-one as building block in organic synthesis
摘要:
1-Bromo-3-buten-2-one is investigated as a building block for organic synthesis. Reduction to the corresponding alcohol works best with lithium aluminium hydride, reaction with primary amines gives 5-membered-aza-heterocycles in moderate yields and reaction with activated methylene compounds to form 5-membered-carbocycles gave unsatisfactory yields when a one-pot-procedure was used. The first step of a stepwise protocol, a Michael addition, is discussed. (C) 2001 Elsevier Science Ltd. All rights reserved.
2-ACETYLNAPHTHO[2,3-B]FURAN -4,9-DIONE FOR USE ON TREATING CANCER
申请人:BOSTON BIOMEDICAL, INC.
公开号:US20160030384A1
公开(公告)日:2016-02-04
The invention provides naphthofuran compounds, polymorphs of naphthofuran compounds, naphthofuran compounds in particle form, purified compositions that contain one or more naphthofuran compounds, purified compositions that contain one or more naphthofuran compounds in particle form, and methods of using these naphthofuran compounds, polymorphs, purified compositions and/or particle forms to treat subjects in need thereof.
Diversity‐Orientated Stereoselective Synthesis through Pd‐Catalyzed Switchable Decarboxylative C−N/C−S Bond Formation in Allylic Surrogates
作者:Lei Deng、Arjan W. Kleij、Weibo Yang
DOI:10.1002/chem.201805295
日期:2018.12.20
diversity‐orientated synthesis from easily available molecular synthons. Herein, an endogenous ligand‐controlled, Pd‐catalyzed allylic substitution allowing for either selective C−N or C−Sbondformation using vinylethylene carbonates (VECs) and N‐sulfonylhydrazones as coupling partners has been developed. This versatile methodology provides a facile, divergent route for the highly chemo‐ and stereoselective
Neutrophil inhibitors to reduce inflammatory response
申请人:The Procter & Gamble Company
公开号:US20040006104A1
公开(公告)日:2004-01-08
The invention provides novel compounds selected from the group consisting of:
1
The compounds of the present invention are useful for the treatment and prevention of a variety of diseases and conditions associated with undesirable or abnormal inflammatory responses, such as ischemia-reperfusion injury. Accordingly, the invention further provides pharmaceutical compositions comprising these compounds. The invention still further provides methods of treatment or prevention for the above disorders using theses compounds or the compositions containing them.
Deprotection of Acetals from Unsaturated, Unstable Bromoketones
作者:Alexandre Descomps、Rolf Carlson
DOI:10.1080/00397911.2013.821133
日期:2014.3.19
Abstract The unstable ketones 1-bromo-3-buten-2-one, 1-bromo-3-butyn-2-one, and 1,3-dibromo-3-buten-2-one can be obtained from the corresponding acetals in high yields by treating the acetals with anhydrous iron (III) chloride suspended on dry silica. A simplified procedure for preparing the reagent is also given. GRAPHICAL ABSTRACT