Direct C–H aminocarbonylation of <i>N</i>-heteroarenes with isocyanides under transition metal-free conditions
作者:Zhong Zhou、Huihui Ji、Qing Li、Qian Zhang、Dong Li
DOI:10.1039/d1ob00245g
日期:——
mediated by an inorganic persulfate salt undertransitionmetal-freeconditions. Mechanistic studies suggested a radical pathway for this reaction without the participation of H2O and O2. This method also showed merits of substrate availability, easy operation and atom economy. It provided an efficient route for straightforward synthesis of N-heteroaryl amides.
开发了通过N-杂芳烃与异氰化物的直接 C-H 氨基羰基化合成 AC-C 键形成酰胺。该反应在无过渡金属条件下由无机过硫酸盐介导。机理研究提出了该反应的根本途径,无需 H 2 O 和 O 2的参与。该方法还显示出底物可用性、操作简便和原子经济性等优点。它为直接合成N-杂芳基酰胺提供了一条有效的途径。
An Ugi Reaction Incorporating a Redox-Neutral Amine C–H Functionalization Step
作者:Zhengbo Zhu、Daniel Seidel
DOI:10.1021/acs.orglett.5b03529
日期:2016.2.19
Pyrrolidine and 1,2,3,4-tetrahydroisoquinoline (THIQ) undergo redox-neutral α-amidation with concurrent N-alkylation upon reaction with aromatic aldehydes and isocyanides. Reactions are promoted by acetic acid and represent a new variant of the Ugi reaction.
吡咯烷和 1,2,3,4-四氢异喹啉 (THIQ)在与芳香醛和异氰化物反应后发生氧化还原中性 α-酰胺化,同时发生N-烷基化。乙酸促进反应,代表 Ugi 反应的新变体。
Copper-catalyzed oxidative cleavage of Passerini and Ugi adducts in basic medium yielding α-ketoamides
作者:Anirban Ghoshal、Mayur D. Ambule、Revoju Sravanthi、Mohit Taneja、Ajay Kumar Srivastava
DOI:10.1039/c9nj03533h
日期:——
oxidative cleavage of Passerini and Ugi adducts in the presence of base and copper(I) iodide is studied in detail. The oxidative cleavage yields α-ketoamides along with acids and amides from Passerini and Ugi adducts respectively. Mechanistic investigations revealed that the reaction proceeds via a radical pathway involving molecular oxygen. Control experiments with 18O-labeled Passerini adducts confirmed
PALLADIUM (II)-CATALYZED gammaC(SP3)-H ALKYNYLATION OF AMINE2
申请人:Council of Scientific & Industrial Research
公开号:US20200317615A1
公开(公告)日:2020-10-08
The present invention relates to a Palladium (II)-catalyzed C(sp
3
)—H alkynylation of amines using picolinamide as directing group. The developed alkynylation strategy is simple, efficient, and tolerant of various ring size including five to eight member cyclic, quaternary amines, and N-heterocyclic motifs.