Magnetic Copper Ferrite Nanoparticles: An Inexpensive, Efficient, Recyclable Catalyst for the Synthesis of Substituted Benzoxazoles via Ullmann-Type Coupling under Ligand-Free Conditions
作者:Hua Wang、Daoshan Yang、Xiao Zhu、Wei Wei、Min Jiang、Ning Zhang、Dandan Ren、Jinmao You
DOI:10.1055/s-0033-1340599
日期:——
A new sustainable strategy for the synthesis of benzoxazoles from substituted N -(2-halophenyl)benzamides was developed in which inexpensive, readily available, air-stable, recyclable copper(II) ferrite serves as a nanocatalyst. The nanocatalyst can be completely recovered with an external magnet and can be used seven times without significant loss of catalytic activity.
开发了一种从取代的 N-(2-卤代苯基)苯甲酰胺合成苯并恶唑的新可持续策略,其中廉价、易得、空气稳定、可回收的铁酸铜 (II) 作为纳米催化剂。纳米催化剂可以通过外部磁铁完全回收,可以使用七次而催化活性没有显着损失。
Copper-catalysed intramolecular O-arylation: a simple and efficient method for benzoxazole synthesis
作者:Fengtian Wu、Jie Zhang、Qianbing Wei、Ping Liu、Jianwei Xie、Haojie Jiang、Bin Dai
DOI:10.1039/c4ob02068e
日期:——
An efficient protocol has been developed for the copper-catalysed intramolecular cyclization of N-(2-iodo-/bromo-/chloro-phenyl)benzamides for the synthesis of 2-substituted benzoxazoles.
The present invention provides a heterocyclic compound having potent tyrosine kinase-inhibiting activity represented by formula:
(wherein, R
1b
is a C
6-10
aryl group which has substituent(s), and the like; T
a
is a single bond, a C
1-6
alkyl group, —CH
2
O—, and the like; X and Y are the same or different, and each is a nitrogen atom which may have substituent(s), and the like; the broken line is a single bond or a double bond; Z
a
is a nitrogen atom or CH; W is a single bond, an oxygen atom, and the like; Q is a C
6-10
aryl group which may have substituent(s) or an aromatic heterocyclic group which may have substituent(s)); or a salt thereof and a pharmaceutical composition comprising thereof.
Benzoxazole- and tetrahydrobenzoxazole-substituted pyridazinones as GPR119 agonists
申请人:Grauert Matthias
公开号:US08772323B2
公开(公告)日:2014-07-08
The present invention relates to pyridazinone derivatives of general formula I, wherein the groups A, G and R1 are as defined in the application, the tautomers thereof, stereoisomers thereof, the mixtures thereof and the salts thereof, which have valuable pharmacological properties, and in particular bind to the GPR119 receptor and modulate its activity.
The present invention relates to pyridazinone derivatives of general formula I, wherein the groups A, G and R
1
are as defined in the application, the tautomers thereof, stereoisomers thereof, the mixtures thereof and the salts thereof, which have valuable pharmacological properties, and in particular bind to the GPR119 receptor and modulate its activity.