Introduction of Heteroaromatic Bases onto Cycloalkanes with BPO
作者:Luan Zhou、Hideo Togo
DOI:10.1002/ejoc.201801797
日期:2019.2.21
Treatment of heteroaromatics with BPO and CF3CO2H in cycloalkanes at 100 °C for 4 h generated C–C bonded heteroaromaticbases bearing cycloaklyl group in good yields under transition‐metal‐free conditions.
在环烷烃中,用BPO和CF 3 CO 2 H在100°C下处理杂芳族化合物4小时,在无过渡金属的条件下,生成的具有C-C键合的带有环烯丙基的杂芳族碱的收率很高。
Direct construction of 2-alkylbenzo-1,3-azoles via C–H activation of alkanes for C–C and C–X (X = O, S) bond formation
作者:Arvind K. Yadav、Lal Dhar S. Yadav
DOI:10.1039/c4ob02488e
日期:——
2-Alkylated benzo(oxa)thiazoles were prepared directly from simple alkanes and aryl isocyanates/isothiocyanates in a one-pot procedure.
Heteroarylation of unactivated C–H bonds suitable for late-stage functionalization
作者:Austin S. Miller、Erik J. Alexanian
DOI:10.1039/d2sc04605a
日期:——
The late-stage introduction of diverse heterocycles onto complex small molecules enables efficient access to new medicinally relevant compounds. An attractive approach to such a transformation would utilize the ubiquitous aliphatic C–H bonds of a complexsubstrate. Herein, we report a system that enables direct C–H heteroarylation using a stable, commercially available O-alkenylhydroxamate with heterocyclic
Radical Substitution of Polyfluoroarenes and Heteroarenes Promoted by Photoredox Activation of Organozinc Iodides
作者:Anton A. Gladkov、Vitalij V. Levin、Alexander D. Dilman
DOI:10.1002/adsc.202300757
日期:2023.10.13
Aromaticcompounds interact with organozinc reagents under photoredox conditions, leading to the substitution products. The reaction is performed under blue light irradiation via in situ generated organozinc reagents (Barbier conditions), which are oxidized by the photocatalyst, followed by radical attack at the aromatic substrate. The method works with polyfluorinated arenes, 2-chlorobenzoxazoles