P<sup>(III)</sup>-Promoted Reductive Coupling of Aromatic and Aliphatic Nitro Compounds with Grignard Reagents
作者:Shan-Shui Meng、Fei Li、Xiaowen Tang、Albert S. C. Chan
DOI:10.1021/acs.orglett.3c01167
日期:2023.5.26
coupling of nitro compounds with Grignard reagents is described. Polyfunctional and pharmaceutically relevant diarylamines were generated by this reaction in moderate to high yields. Aliphatic nitro compounds that are highly challenging substrates undergo a combination of α-arylation and reductive coupling to afford the α-arylated arylamines efficiently. A series of valuable biaryl compounds with polyfluorinated
A nickel-catalyzed oxidative coupling of zinc amides with organomagnesium compounds selectively produces diarylamines under mild reaction conditions, with tolerance for chloride, bromide, hydroxyl, ester, and ketone groups. A diamine is bis-monoarylated. A bromoaniline undergoes N-arylation followed by Kumada-Tamao-Corriu coupling in one pot. The reaction may proceed via oxidatively induced reductive elimination of a nickel species.
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作者:G. Boyer、M. Giorgi、F. Chatel、J. P. Galy
DOI:10.1023/a:1021860410863
日期:——
The structural determination by X-ray crystallography of the titled N-arylamine 4a, as well as AM(1) calculations on a series of derivatives (4b-c, 5a-c), are reported. The compound 4a is monoclinic P2(1)/c with a = 7.656(3), b = 23.655(5), c = 7.686(9) Angstrom, beta = 112.59(6)degrees, V = 1285.2(2) Angstrom(3) and Z = 4. This structure has been used as a template for the building of some others derivatives used for AM(1) calculations. The results show that the cyclization position on the aromatic rings, which can lead to two regioisomers, depends on the nature of the benzylic substituants.