Palladium-Catalyzed Aerobic Dehydrogenative Aromatization of Cyclohexanone Imines to Arylamines
摘要:
Dehydrogenative aromatization of cyclohexanone imines to arylamines has been achieved using a palladium catalyst under aerobic conditions. The reaction is applicable to a variety of imines that are either preformed or generated in situ from cyclohexanone derivatives and aryl or alkylamines.
Ligand-Enabled Gold-Catalyzed C(sp<sup>2</sup>)–N Cross-Coupling Reactions of Aryl Iodides with Amines
作者:Manjur O. Akram、Avishek Das、Indradweep Chakrabarty、Nitin T. Patil
DOI:10.1021/acs.orglett.9b03082
日期:2019.10.4
example of ancillary (P,N)-ligand-enabled gold-catalyzed C-N cross-couplingreactions of aryl iodides with amines is reported. The high generality of the reaction in de novo synthesis, late-stage modifications, and cascade processes to access functionalized indolinones and carbazoles underscores the synthetic potential of the presented strategy. Monitoring the reaction with ESI-HRMS and NMR provided strong
Diarylamine Synthesis via Desulfinylative Smiles Rearrangement
作者:Thomas Sephton、Jonathan M. Large、Sam Butterworth、Michael F. Greaney
DOI:10.1021/acs.orglett.1c04122
日期:2022.2.11
Diarylamines are obtained directly from sulfinamides through a novel rearrangement sequence. The transformation is transition metal-free and proceeds under mild conditions, providing facile access to highly sterically hindered diarylamines that are otherwise inaccessible by traditional SNAr chemistry. The reaction highlights the distinct reactivity of the sulfinamide group in Smilesrearrangements
二芳基胺是通过一种新的重排序列直接从亚磺酰胺中获得的。该转化不含过渡金属,在温和条件下进行,可轻松获得传统 S N Ar 化学无法获得的高度空间位阻二芳基胺。该反应突出了 Smiles 重排中的亚磺酰胺基团与更常见的磺酰胺的不同反应性。
Addition of aryl cuprates to azides: a novel approach for the synthesis of unsymmetrical diaryl amines
react smoothly with aryl cuprates, generated in situ from aryl magnesium bromide and CuCN in THF to furnish a variety of unsymmetrical diaryl amines in good yields. This is the first report on the synthesis of diarylamines from aryl azides and aryl bromides via an organometallic approach.
Herein, C–N cross coupling methodology was developed for the synthesis of a diverse range of nitro-substituted secondary amines. A variety of strained, aliphatic, and aromatic precursors were effectively used, with low catalyst and ligand loading ratios resulting in product formation in good yield. This method can act as an alternative to nucleophilic addition reactions. To cross couple electron-donating