A Simple and Effective Synthesis of Benzolactones and Benzolactams by Noncatalytic Benzylic Oxidation of Cyclic Benzylic Ethers and N-Protected Cyclic Benzylic Amines with Sodium Chlorite as an Oxidant
作者:Chi Zhang、Ai-Ru Song、Jun Yu
DOI:10.1055/s-0032-1316747
日期:——
Sodium chlorite (NaClO2) was shown to be capable of oxidizing cyclic benzylic ethers and N-protected cyclic benzylic amines in a heterogeneous solvent system of 1,1,1-trichloroethane and water at 55-65 degrees C to give synthetically useful benzolactones and benzolactams, respectively, in high-to-excellent yields.
Efficient and Scalable Synthesis of 3,4-Dihydroisoquinolin-1(2H)-ones by Benzylic Oxidation of Tetrahydroisoquinoline Derivatives using Cerium Ammonium Nitrate (CAN)
作者:Jiajun Luo、Zhilong Li、Jiaxin He、Tong Li、Daochen Wu、Yang Lai、Haiying Sun
DOI:10.1039/d4ob00491d
日期:——
tetrahydroisoquinoline derivatives using a catalytic amount of ceriumammoniumnitrate (CAN) and a stoichiometric amount of NaBrO3 as oxidants was developed. The reaction is significantly influenced by the substituent groups on the phenyl ring. While electron-withdrawing groups on the phenyl ring can lower the reactivities of the substrates, electron-donating groups on the phenyl ring can dramatically promote
开发了一种高效且可扩展的方法,通过使用催化量的硝酸铈铵 (CAN) 和化学计量的 NaBrO 3作为氧化剂,通过四氢异喹啉衍生物的苄基氧化来合成 3,4-二氢异喹啉-1( 2 H )-酮。该反应受苯环上的取代基的显着影响。虽然苯环上的吸电子基团可以降低底物的反应活性,但苯环上的给电子基团可以显着促进氧化速率。