highly effective C−O coupling reaction of (hetero)aryl electrophiles with primary and secondary alcohols is reported. Catalyzed by a NiII‐arylcomplex under long‐wave UV (390–395 nm) irradiation in the presence of a soluble amine base without any additional photosensitizer, the reaction enables the etherification of aryl bromides and arylchlorides as well as sulfonates with a wide range of primary
据报道,(杂)芳基亲电试剂与伯醇和仲醇的高效C-O偶联反应。在可溶性胺碱的存在下,在没有任何其他光敏剂的情况下,在长波紫外线(390–395 nm)辐射下,由Ni II-芳基络合物催化,该反应可以使芳基溴化物和芳基氯化物以及磺酸盐与多种伯和仲脂族醇,可提供合成上重要的醚。分子内CO偶联也是可能的。该反应似乎通过Ni I -Ni III催化循环进行。
Metal-Free Regioselective Monocyanation of Hydroxy-, Alkoxy-, and Benzyloxyarenes by Potassium Thiocyanate and Silica Sulfuric Acid as a Cyanating Agent
A novel and efficient metal- and solvent-free regioselective para-C–H cyanation of hydroxy-, alkoxy-, and benzyloxyarene derivatives has been introduced, using nontoxic potassium thiocyanate as a cyanating reagent in the presence of silica sulfuric acid (SSA). The desired products are obtained in good to high yields without any toxic byproducts.
[EN] PREPARATION METHOD FOR (4-ISOPROPOXY-2-METHYL) PHENYL ISOPROPYL KETONE<br/>[FR] PROCÉDÉ DE PRÉPARATION DE (4-ISOPROPOXY-2-MÉTHYL) PHÉNYLISOPROPYLCÉTONE<br/>[ZH] 一种(4-异丙氧基-2-甲基)苯基异丙基酮的制备方法
[EN] PROCESS AND INTERMEDIATES FOR PREPARATION OF ISOFETAMID<br/>[FR] PROCÉDÉ ET INTERMÉDIAIRES POUR LA PRÉPARATION D'ISOFÉTAMID
申请人:[en]ADAMA MAKHTESHIM LTD.
公开号:WO2023082149A1
公开(公告)日:2023-05-19
The present disclosure relates to novel intermediates, preparation process thereof, and a process for producing isofetamid. The present disclosure also relates to the use of novel intermediates for preparing isofetamid. The present disclosure further relates to a process for preparation of some other intermediates of isofetamid using the novel intermediates.