Sonochemical synthesis of polyarylated oxazoles as potential cytotoxic agents
作者:Venkata Ramana Kandula、Mohanreddy Pothireddy、K. Suresh Babu、Ravikumar Kapavarapu、Rambabu Dandela、Manojit Pal
DOI:10.1016/j.tetlet.2021.153011
日期:2021.4
The ultrasound assisted facile, rapid and one-pot synthesis of 2-aryl substituted 4,5-diphenyloxazoles was achieved via the reaction of commercially available benzoin (or 2-hydroxy-2-phenylacetophenone) with benzylamines in the presence of IBX under mild conditions. The methodology involved initial IBX mediated conversion of benzoin to benzil and then reaction with benzylamine followed by intramolecular
CuI-catalyzed and air promoted oxidative cyclization for one-pot synthesis of polyarylated oxazoles
作者:Ping Hu、Qiang Wang、Yizhe Yan、Shuai Zhang、Baiqun Zhang、Zhiyong Wang
DOI:10.1039/c3ob40657a
日期:——
A facile CuI-catalyzed and air promoted oxidative cyclization was developed for the synthesis of polyarylated oxazoles. By virtue of this method, a variety of arylated oxazoles could be easily synthesized from readily available starting materials at room temperature in air.
Synthesis of 2‐Substituted 4,5‐Diphenyloxazoles under Solvent‐Free Microwave Irradiation Conditions
作者:Jong Chan Lee、Jang‐Woo Seo、Jong Wook Baek
DOI:10.1080/00397910701392244
日期:2007.7.1
novel method for the direct conversion of deoxybenzoin into 2‐alkyl‐4,5‐diphenyloxazoles and 2‐aryl‐4,5‐diphenyloxazoles has been developed using treatment of HTIB and nitriles undersolvent‐freemicrowaveirradiationconditions.
Monomers useful in nucleophilic displacement synthesis of polybenzazole
申请人:The Dow Chemical Company
公开号:US05216110A1
公开(公告)日:1993-06-01
Azole rings, such as oxazole and thiazole rings, can activate an aromatic ring bonded to a leaving group such as a halogen atom so that the aromatic ring will undergo aromatic nucleophilic substitution. The reaction is useful for making ethers, thioethers and amines containing azole rings. In particular, monomers having azole rings, activated aromatic rings with leaving groups and nucleophilic moieties can react under conditions of aromatic nucleophilic displacement to form non-rigid rod PBZ polymers. The non-rigid rod PBZ polymers can be used to form molecular composites with rigid rod PBZ polymers which molecular composites are not substantially phase separated.
Synthesis of 2,4,5-trisubstituted oxazoles from 1,2-diketones and amines by using an electrochemical method
作者:Liangxiao Wei、Gaoqing Yuan
DOI:10.1016/j.tet.2023.133246
日期:2023.2
An efficient electrochemical synthesis of trisubstituted oxazoles from readily available 1,2-diketones and amines is described. With KI as the electrocatalyst, t-BuOK as the base and MeOH as the electrolytic solvent, the electrochemical synthesis could be smoothly performed in an undivided cell to afford 2,4,5-trisubstituted oxazoles in good yields at room temperature.
描述了从容易获得的 1,2-二酮和胺中高效电化学合成三取代恶唑。以 KI 为电催化剂,t -BuOK 为碱,MeOH 为电解溶剂,电化学合成可以在未分隔的电池中顺利进行,在室温下以良好的产率得到 2,4,5-三取代恶唑。