Regioselective synthesis of [1,2,3]-triazoles catalyzed by Cu(I) generated in situ from Cu(0) nanosize activated powder and amine hydrochloride salts
作者:Hernán A. Orgueira、Demosthenes Fokas、Yuko Isome、Philip C.-M. Chan、Carmen M. Baldino
DOI:10.1016/j.tetlet.2005.02.127
日期:2005.4
A straightforward and efficient method for the regioselectivesynthesis of functionalized 1,4-disubstituted [1,2,3]-triazoles, from terminal alkynes and azides, has been established utilizing Cu(0) as the source of the catalytic species. The presumed catalytic Cu(I) species is generated by the combination of 10 mol % copper nanosize activated powder and 1 equiv of an amine hydrochloride salt. The addition
Chinazoline derivatives as aurora kinase inhibitors
申请人:Mortlock Austen Andrew
公开号:US20060178382A1
公开(公告)日:2006-08-10
Quinazoline derivatives of formula (I) (A chemical formula should be inserted here—please see paper copy enclosed herewith) formula (I) for use in the treatment of proliferative diseases such as cancer and in the preparation of medicaments for use in the treatment of proliferative diseases, and to processes for their preparation, as well as pharmaceutical compositions containing them as active ingredient.
Terminal alkynes substituted by a carbonyl-type electron-withdrawing group have been found to undergo Huisgen's cycloaddition with azides at room temperature in a solvent-free manner; without a need of either heating or catalysis. Metallic salts, other than the copper ones also efficiently catalyzed the reactions. The yields were good and the products isolated mainly as their 1,4-disubstituted isomer. (C) 2010 Elsevier Ltd. All rights reserved.
CHINAZOLINE DERIVATIVES AS AURORA KINASE INHIBITORS
申请人:AstraZeneca AB
公开号:EP1644361A1
公开(公告)日:2006-04-12
Boronic Acid Catalysis for Mild and Selective [3+2] Dipolar Cycloadditions to Unsaturated Carboxylic Acids
作者:Hongchao Zheng、Robert McDonald、Dennis G. Hall
DOI:10.1002/chem.200903484
日期:2010.5.10
activation of unsaturated carboxylic acids is applied in several classic dipolar [3+2] cycloadditions involving azides, nitrile oxides, and nitrones as partners. These cycloadditions can be used to produce pharmaceutically interesting, small heterocyclic products, such as triazoles, isoxazoles, and isoxazolidines. These cycloadducts are formed directly and include a free carboxylic acid functionality that can