An efficient and environmentally electrooxidative N-nitrosation of secondary amines using potassium/sodium nitrite as nitrosating agents has been developed. This strategy break through the innate combination of sodium nitrite and a strong acid. The reaction is compatible with the late-stage modification of pharmaceutical compounds and could be conducted in gram scale with high reaction efficiency.
Flow Electrochemistry for the N‐Nitrosation of Secondary Amines
作者:Rojan Ali、Rasool Babaahmadi、Matthew Didsbury、Rebecca Stephens、Rebecca L. Melen、Thomas Wirth
DOI:10.1002/chem.202300957
日期:——
Go with the flow: N-Nitroso compounds have been synthesised from secondary amines by using sodium nitrite in an electrochemical flow setup. A 1 : 1 mixture of acetonitrile and water was used for this reaction, making this a mild approach avoiding the use of additional supporting electrolytes. N-Nitrosamines could be obtained in yields up to 99 %, and several compounds could be purified with an in-line
Iodide-Catalyzed Synthesis of <i>N</i>-Nitrosamines via C–N Cleavage of Nitromethane
作者:Jie Zhang、Jiewen Jiang、Yuling Li、Xiaobing Wan
DOI:10.1021/jo401915t
日期:2013.11.15
An iodide-catalyzed process to synthesize N-nitrosamines has been developed using TBHP as the oxidant. The mild catalytic system succeeded in cleaving the carbon-nitrogen bond in nitromethane. This methodology uses commercially available, inexpensive catalysts and oxidants and has a wide substrate scope and operational simplicity.