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.
Photoelectrochemical cross-dehydrogenative coupling of benzothiazoles with strong aliphatic C–H bonds
作者:Luca Capaldo、Lorenzo L. Quadri、Daniele Merli、Davide Ravelli
DOI:10.1039/d1cc01012c
日期:——
cross-dehydrogenative coupling of unactivated aliphatic hydrogen donors (e.g. alkanes) with benzothiazoles is reported. We used tetrabutylammonium decatungstate as the photocatalyst to activate strong C(sp3)–H bonds in the chosen substrates, while electrochemistry scavenged the extra electrons.
Ni-Catalyzed Reductive Liebeskind–Srogl Alkylation of Heterocycles
作者:Yuanhong Ma、Jose Cammarata、Josep Cornella
DOI:10.1021/jacs.8b13534
日期:2019.2.6
Herein we present a Ni-catalyzed alkylation of C–SMe with alkyl bromides for the decoration of heterocyclic frameworks. The protocol, reminiscent to the Liebeskind–Srogl coupling, makes use of simple C(sp2)–SMe to be engaged in a reductive coupling. The reaction is suitable for a preponderance of highly valuable heterocyclic motifs. In addition to cyclic bromides, noncyclic alkyl bromides are well
在此,我们提出了用烷基溴对 C-SMe 进行 Ni 催化烷基化,用于装饰杂环骨架。该协议让人想起 Liebeskind-Srogl 耦合,利用简单的 C(sp2)-SMe 进行还原耦合。该反应适用于占优势的高价值杂环基序。除了环溴化物外,非环烷基溴化物也能很好地适应异构化的保留水平。该协议是可扩展的,并允许在存在其他功能化句柄的情况下进行正交耦合。