nitrogen donor conveniently transforms a variety of ketones and aldehydes into amides. Science, this issue p. 281 An acetylated hydroxylamine conveniently derived in situ from nitromethane can turn ketones and aldehydes into amides. The Schmidt reaction has been an efficient and widely used synthetic approach to amides and nitriles since its discovery in 1923. However, its application often entails
Switching from Biaryl Formation to Amidation with Convoluted Polymeric Nickel Catalysis
作者:Abhijit Sen、Raghu N. Dhital、Takuma Sato、Aya Ohno、Yoichi M. A. Yamada
DOI:10.1021/acscatal.0c03888
日期:2020.12
and we confirmed that it is consistent with Ni K-edge EXAFS. The Suzuki–Miyaura-type coupling of aryl halides and arylboronicesters proceeded using P4VP-NiCl2 (0.1 mol % Ni) to give the corresponding biaryl compounds in up to 94% yield. Surprisingly, when the same reaction of aryl halides and arylboronicacid/ester was carried out in the presence of amides, the amidation proceeded predominantly to
been developed as chemoselective N-acylation reagents. Selective protection of primary amines in the presence of secondary amines, acylation of aliphatic amines in the presence of aryl amines, and monofunctionalization of primary-secondary diamines as well as selective N-acylation of amino alcohols using these reagents are described. All of the acylation reactions were carried out in water as a green
One Pot Preparation of Amides from Azo Compounds by Sm/TiCl<sub>4</sub>
作者:Xue Li、Yong-Min Zhang
DOI:10.1002/jccs.200500175
日期:2005.12
Azocompounds were conveniently reduced by a system consisting of Sm/TiCl 4 to produce aniline anions. This anion species reacted smoothly with aliphatic acyl chlorides or acid anhydrides to afford corresponding amides under mild and neutral conditions.