Merrifield type resin is described. With this reagent, arylnitroethanes have been obtained by regioselective reduction of β-nitrostyrenes. The yields are good and no dimeric compounds are formed. The role of magnesium ions in these reductions is different from that observed with classical NADHmodels.
The monoanions of nitroalkanes are ambident nucleophiles that react with carbonate electrophiles through the oxygen atom. Products arising from reactivity at the carbon atom will yield α-nitro esters, which are precursors for α-amino esters. We demonstrate this in the reactions of nitroalkanes with benzyl phenyl carbonate and DABCO where α-nitro esters are obtained instead of nitrile oxides. The products
Reduction of α,β-unsaturated nitroolefins into nitroalkanes with Hantzsch ester promoted by isothiouronium salts
作者:Sungmin Kang、Haney Lee、Taek Hyeon Kim
DOI:10.1080/00397911.2019.1614627
日期:2019.10.2
Abstract α,β-Unsaturated nitroolefins were reduced into nitroalkanes with a Hantzschester, promoted by S-benzyl isothiouronium iodide. The reactions proceeded successfully to afford the desired products in high yields and with excellent chemoselectivity. Graphical Abstract
Enabling Reductive C–N Cross-Coupling of Nitroalkanes and Boronic Acids by Steric Design of P(III)/P(V)═O Catalysts
作者:Gen Li、Yuzuru Kanda、Seung Youn Hong、Alexander T. Radosevich
DOI:10.1021/jacs.2c01487
日期:2022.5.11
bond-forming reductive coupling of nitroalkanes with arylboronicacids and esters is reported. The method shows excellent chemoselectivity for the nitro/boronicacid substrate pair, allowing the synthesis of N-(hetero)arylamines rich in functionalization. The identification of a sterically reduced phosphetane catalyst capable of productive coupling in the P(III)/P(V)═O redox manifold is the key enabling development