Vanadium-Catalyzed Oxidative C(CO)–C(CO) Bond Cleavage for C–N Bond Formation: One-Pot Domino Transformation of 1,2-Diketones and Amidines into Imides and Amides
作者:Chander Singh Digwal、Upasana Yadav、P. V. Sri Ramya、Sravani Sana、Baijayantimala Swain、Ahmed Kamal
DOI:10.1021/acs.joc.7b00950
日期:2017.7.21
identified that enables their transformation into imides and amides. The reaction proceeds by dual acylation of amidines via oxidative C(CO)–C(CO) bond cleavage of 1,2-diketones to afford N,N′-diaroyl-N-arylbenzamidine intermediates. In the reaction, these intermediates are easily hydrolyzed into imides and amides through vanadium catalysis. This method provides a practical, simple, and mild synthetic
n‐Bu4NI/K2S2O8‐Mediated C−N Coupling Between Aldehydes and Amides
作者:Xiaochen Liu、Samual Hee、Netanel G. Sapir、Alvin Li、Syed Farkruzzaman、Jianbo Liu、Yu Chen
DOI:10.1002/ejoc.202400067
日期:2024.6.17
coupling between aldehydes and amides is reported. When an aromatic aldehyde bears electron-donating groups at either the ortho or para position of the formyl group, a transformylation takes place exclusively. Without these groups, a cross-dehydrogenative coupling dominates. Furthermore, when 2-aminobenzamide is employed, only quinazolin-4(3H)-ones are obtained regardless of the aldehyde used.
据报道,醛和酰胺之间存在n -Bu 4 NI/K 2 S 2 O 8介导的底物依赖性 CN-N 偶联。当芳香醛在甲酰基的邻位或对位带有给电子基团时,仅发生转化酰化。如果没有这些基团,则交叉脱氢偶联占主导地位。此外,当使用2-氨基苯甲酰胺时,无论使用何种醛,都仅获得喹唑啉-4( 3H )-酮。