Yu, Chengzhi published the artcileSamarium(0) and 1,1′-Dioctyl-4,4′-Bipyridinium Dibromide: A Novel Electron-Transfer System for the Chemoselective Reduction of Aromatic Nitro Groups, Application In Synthesis of 36437-30-6, the main research area is reduction aromatic nitro group samarium bipyridinium dibromide catalyst; electron transfer catalyst dioctylbipyridinium dibromide; amine aromatic preparation.
A mild and efficient electron-transfer method was developed for the chemoselective reduction of aromatic nitro groups using samarium(0) metal in the presence of a catalytic amount of 1,1′-dioctyl-4,4′-bipyridinium dibromide. This method was found to give the product aromatic amine in 79-99% yield with selectivity over a number of other functional and protecting groups such as alkene, azide, benzyl ether, nitrile, amide, halide, p-toluenesulfonamide, t-Boc, tert-butyldiphenylsilyl ether, and aliphatic nitro groups. Our results also indicate that samarium(0) plays an important role in the reduction process and that 1,1′-dioctyl-4,4′-bipyridinium dibromide acts as an electron-transfer catalyst and is essential in the activation of samarium(0) metal. The major active reducing agent responsible for the reduction is believed to be the radical cation species formed from 1,1′-dioctyl-4,4′-bipyridinium dibromide.
Journal of Organic Chemistry published new progress about Aromatic amines Role: SPN (Synthetic Preparation), PREP (Preparation). 36437-30-6 belongs to class pyridine-derivatives, name is 1,1-Di-n-octyl-4,4-bipyridinium Dibromide, and the molecular formula is C26H42Br2N2, Application In Synthesis of 36437-30-6.