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。
Iron-Catalyzed Oxidative Amidation of Tertiary Amines with Aldehydes
作者:Yuanming Li、Fan Jia、Zhiping Li
DOI:10.1002/chem.201203824
日期:2013.1.2
A new oxidative coupling protocol for amide bond formation has been developed (see scheme). The method provides an efficient and practical route for the synthesis of tertiary amides from readily available tertiary amines and aldehydes in the presence of a simple FeCl2 catalyst. Mechanistic studies indicated that a peroxide and an iminium ion act as the reactive intermediates in this oxidative amidation
A novel and efficient palladium-catalyzed aminocarbonylation of aryliodides with amides and N-alkyl anilines has been developed. The reaction tolerates a wide range of functional groups and is a reliable method for the rapid synthesis of a variety of valuable imides and tertiary benzanilides under an atmospheric pressure of CO.
Catalytic Deprotonative α-Formylation of Heteroarenes by an Amide Base Generated in Situ from Tetramethylammonium Fluoride and Tris(trimethylsilyl)amine
Heteroarene formylations in DMF solution proceed in the presence of an amidebase catalyst generated in situ from tetramethylammonium fluoride (TMAF) and tris(trimethylsilyl)amine (N(TMS)3). The reaction proceeds at room temperature and has an operationally simple procedure. Various heteroarenes, including benzothiophene, thiophene, benzothiazole, oxazole, and indole derivatives, can be formylated
Alternating Current Electrolysis for Organic Electrosynthesis: Trifluoromethylation of (Hetero)arenes
作者:Sachini Rodrigo、Chanchamnan Um、Jason C. Mixdorf、Disni Gunasekera、Hien M. Nguyen、Long Luo
DOI:10.1021/acs.orglett.0c01906
日期:2020.9.4
Paired electrolysis has a limited reaction scope for organic synthesis because it is often not compatible with reactions involving short-lived intermediates. We addressed this limitation using alternatingcurrentelectrolysis (ACE). Using trifluoromethylation of (hetero)arenes as a model reaction, we showed that the yield was improved from 13% using paired electrolysis to 84% using ACE. We have also