Synthesis of 5-alkyl-5-aryl-1-pyrroline N-oxides from 1-aryl-substituted nitroalkanes and acrolein via Michael addition and nitro reductive cyclization
作者:Jingjing Xu、Xingyao Li、Jinlong Wu、Wei-Min Dai
DOI:10.1016/j.tet.2014.07.046
日期:2014.9
A general method for accessing 5-alkyl-5-aryl-1-pyrroline N-oxides (AAPOs) has been established using readily available aryl bromides, nitroalkanes, and acrolein as the starting materials. The palladium-catalyzed arylation of nitroalkanes gave the 1-aryl-substituted nitroalkanes, which underwent the Et3N-catalyzed Michael addition with acrolein at room temperature to afford the 4-aryl-4-nitroaldehydes
Micelle-Enabled Palladium Catalysis for Convenient sp<sup>2</sup>-sp<sup>3</sup> Coupling of Nitroalkanes with Aryl Bromides in Water Under Mild Conditions
作者:Jeremy Brals、Justin D. Smith、Faisal Ibrahim、Fabrice Gallou、Sachin Handa
DOI:10.1021/acscatal.7b02663
日期:2017.10.6
demonstrated with the palladium-catalyzed sp2-sp3 coupling of nitroalkanes to aryl bromides using a heteroleptic palladium catalyst under unprecedentedly mild conditions. Optimized reaction conditions mostly provided good yields up to gram scale, with high selectivity and functional group tolerance for a wide scope of aryl bromides. Use of surfactant FI-750-M makes water the gross reaction medium and enables
Aryl ketones were prepared from aryl triflates and nitroalkanes through a palladium-catalyzedcross-coupling followed by Nef-type reaction in a one-pot synthesis.
芳基酮是由芳基三氟甲磺酸酯和硝基烷烃通过钯催化的交叉偶联然后在一锅合成中的 Nef 型反应制备的。
An asymmetric sp3–sp3 cross-electrophile coupling using ‘ene’-reductases
作者:Haigen Fu、Jingzhe Cao、Tianzhang Qiao、Yuyin Qi、Simon J. Charnock、Samuel Garfinkle、Todd K. Hyster
DOI:10.1038/s41586-022-05167-1
日期:2022.10.13
XEC between alkyl halides and nitroalkanes catalyzed by flavin-dependent ‘ene’-reductases. Photoexcitation of the enzyme-templated charge-transfer complex between an alkyl halide and flavin cofactor enables the chemoselective reduction of alkyl halide over the thermodynamically favored nitroalkane partner. The key C–C bond-forming step occurs via the reaction of an alkyl radical with an in situ generated