Synthesis of Thiotetrazoles and Arylaminotetrazoles Using Rutile Tio2 nanoparticles as a heterogeneous and reusable catalyst
摘要:
A novel method is described to prepare rutile TiO2 nanoparticles which are reusable and efficient heterogeneous catalysts for the synthesis of thiotetrazoles and arylaminotetrazoles - compounds widely used in medicinal and coordination chemistry. This procedure has the advantages of good to excellent yields of products, elimination of homogeneous catalysts and toxic and explosive reagents, simple methodology, easy work up and the reusability of the heterogeneous catalyst.
作者:V. A. Petrosyan、M. E. Niyazymbetov、L. D. Konyushkin、V. P. Litvinov
DOI:10.1055/s-1990-27030
日期:——
Synthesis of functionally substituted sulfides by alkylation of electrochemically generated thiolate on platinum or glassy carbon cathodes with organohalides of various structures is reported.
Palladium-Catalyzed Addition of Potassium Aryltrifluoroborates to Aliphatic Nitriles: Synthesis of Alkyl Aryl Ketones, Diketone Compounds, and 2-Arylbenzo[<i>b</i>]furans
developed, leading to a wide range of alkylarylketones with moderate to excellent yields. Moreover, several dinitriles (e.g., malononitrile, glutaronitrile, and adiponitrile) were applicable to this process for the construction of 1,3-, 1,5-, or 1,6-dicarbonyl compounds. The scope of the developed approach is successfully explored toward the one-step synthesis of 2-arylbenzo[b]furans via sequential
已经开发了钯催化的芳基三氟硼酸钾加成到脂肪族腈中的方法,从而产生了范围广泛的烷基芳基酮,并具有中等至极好的收率。此外,几种二腈(例如丙二腈,戊二腈和己二腈)适用于该方法,用于构建1,3-,1,5-或1,6-二羰基化合物。通过顺序加成和分子内环化反应,一步一步合成2-芳基苯并[ b ]呋喃已成功探索了所开发方法的范围。该方法学接受了广泛的底物,并适用于文库合成。
Antiinflammatory derivatives of 3-aryl-2,1-benzisoxazole
申请人:A.H. ROBINS COMPANY, INCORPORATED
公开号:EP0260924A1
公开(公告)日:1988-03-23
Novel 3-Aryl-2,1-benzisoxazole compounds having the formula:
wherein each R1 and R2 represents a hydrogen atom or methyl group;
R3 and R4 represent a hydroxyl, loweralkoxy, amino or -OM group wherein M is a pharmaceutically acceptable cation;
X represents a hydrogen or halogen atom, a loweralkyl or nitro group;
Y represents a hydrogen or halogen atom, a loweralkyl, loweralkoxy, nitro or trifluoromethyl group;
n and p are independently zero or one with the proviso that either n or p must be one
are disclosed. which have anti-inflammatory activity. Novel intermediates in the preparation of such compounds are also disclosed.
本发明公开了具有以下式子的新型 3-芳基-2,1-苯并异噁唑化合物: 其中每个 R1 和 R2 代表氢原子或甲基;R3 和 R4 代表羟基、低级烷氧基、氨基或 -OM 基团,其中 M 是药学上可接受的阳离子;X 代表氢原子或卤素原子、低级烷基或硝基;Y 代表氢原子或卤素原子、低级烷基、低级烷氧基、硝基或三氟甲基;n 和 p 独立地为 0 或 1,但 n 或 p 必须为 1。 本发明还公开了制备此类化合物的新型中间体。
Electrochemical synthesis of functionally substituted sulfides
作者:M. E. Niyazymbetov、V. A. Petrosyan、L. D. Konyushkin、V. P. Litvinov
DOI:10.1007/bf00957858
日期:1990.7
A method of synthesis of functionally substituted sulfides by cathode electrolysis of thiols on platinum or carbon glass electrodes in the presence of organyl halides was developed. The method of the rotating disk electrode with ring showed that this process passes through the intermediate formation of a thiolate anion on the cathode, and its reaction with the organyl halide results in a high yield of sulfides.