Nitrosation of α, α'-dianions produced from ketones using a couple of bases was carried out with tert-butyl nitrite(tert-BuONO) in ether, and then two regioisomers of oximes(but not acetone)were obtained simultaneously. The ratio of these regioisomers was remarkably reversed by the addition of hexamethylphosphoric triamide(HMPA).
Water-mediated decarboxylative radical nitrosation of β-keto acids with <i>tert</i>-butyl nitrite: access to α-oximino ketones
作者:Lina Jia、Linlin Li、Fuzhong Han、Xiangping Hu
DOI:10.1039/d2nj04175h
日期:——
A practical catalyst-free decarboxylative radical nitrosation reaction of β-keto acids with tert-butyl nitrite in water was developed. The strategy involving radicals worked well under relatively mild conditions. This protocol presented an efficient route for the construction of various aromatic and aliphatic α-oximino ketones with different electronic and steric properties in good to excellent yields