An efficient oxidative coupling protocol for amide formation has been developed. Various tertiary amines and aromatic aldehydes were oxidized to their corresponding tertiary amides in moderate to good yields in the presence of a simple nBu4NI-catalyst.
已经开发了用于酰胺形成的有效的氧化偶联方案。在简单的n Bu 4 NI催化剂存在下,各种叔胺和芳族醛以中等到良好的收率被氧化成它们相应的叔酰胺。
KMnO4-mediated oxidative C N bond cleavage of tertiary amines: Synthesis of amides and sulfonamides
作者:Zhang Zhang、Yong-Hong Liu、Xi Zhang、Xi-Cun Wang
DOI:10.1016/j.tet.2019.03.047
日期:2019.5
KMnO4-mediated oxidative CN bond cleavage of tertiaryamines producing secondary amine was introduced, which was trapped by electrophiles (acyl chloride and sulfonyl chloride) to form amides and sulfonamides. The reaction could take place at mild condition, tolerating a wide range of function groups and affording products in moderate to excellent yields.
A diversity-oriented synthesis of bioactive benzanilidesviaC(sp2)–H hydroxylation has been studied. The reaction demonstrates excellent regioselectivity, good tolerance of functional groups, and high yields.
A visible-light induced cerium-catalyzed N-demethylation of N-methyl amides under air atmosphere to the corresponding of N-demethylated amides is presented. Upon irradiation the excited states of [CeIVCln]2− are able to activate N-methyl amides. This reaction provides a methodology to cleave the C−N bond of amides under air conditions.
提出了可见光诱导的铈催化的N-甲基酰胺在空气气氛下的N-去甲基化反应为相应的N-去甲基化酰胺。在辐照时,[Ce IV Cl n ] 2−的激发态能够激活N-甲基酰胺。该反应提供了一种在空气条件下裂解酰胺 C-N 键的方法。