Unexpected Insertion of Nitrogen into a C–C Bond: Access to 2,3-Disubstituted Quinazolinone Scaffolds
作者:Hui-Li Liu、Xiao-Tong Li、Heng-Zhi Tian、Xing-Wen Sun
DOI:10.1021/acs.orglett.1c01235
日期:2021.6.18
A novel, practical, highly efficient, and transition metal free nitrogeninsertion reaction for the synthesis of 2,3-disubstituted quinazolinone derivatives was developed. Diverse functionalized 3-indolinone-2-carboxylates and nitrosoarenes with a wide range of substituted nitrosobenzenes, nitrosopyridines, dibenzofuranyl, or dibenzothienyl nitroso compounds worked smoothly to give 2,3-disubstituted
Synthesis of Di(hetero)arylamines from Nitrosoarenes and Boronic Acids: A General, Mild, and Transition-Metal-Free Coupling
作者:Silvia Roscales、Aurelio G. Csákÿ
DOI:10.1021/acs.orglett.8b00473
日期:2018.3.16
The synthesis of di(hetero)arylamines by a transition-metal-free cross-coupling between nitrosoarenes and boronicacids is reported. The procedure is experimentally simple, fast, mild, and scalable and has a wide functional group tolerance, including carbonyls, nitro, halogens, free OH and NH groups. It also permits the synthesis of sterically hindered compounds.
Nitrosation of Aryl and Heteroaryltrifluoroborates with Nitrosonium Tetrafluoroborate
作者:Gary A. Molander、Livia N. Cavalcanti
DOI:10.1021/jo300551m
日期:2012.5.4
converted into a variety of different substituents in a late synthetic stage. In this paper, we disclose a mild, selective, and convenient method for the ipso-nitrosation of organotrifluoroborates using nitrosonium tetrafluoroborate (NOBF4). Aryl- and heteroaryltrifluoroborates were converted into the corresponding nitroso products in good to excellent yields. This method proved to be tolerant of a broad range