Triarylbismuthanes as Threefold Aryl-Transfer Reagents in Regioselective Cross-Coupling Reactions with Bromopyridines and Quinolines
作者:Maddali L. N. Rao、Ritesh J. Dhanorkar
DOI:10.1002/ejoc.201402455
日期:2014.8
Cross-coupling studies using bromopyridines and bromoquinolines with triarylbismuths as threefold coupling reagents in substoichiometric amounts under Pd-catalysed conditions are disclosed. The reactivity was high with both mono- and dibromopyridyl substrates, and mono- and bis-couplings were carried out regioselectively. A library of monoaryl and diaryl pyridines was formed in high yields. A one-pot
Synthesis of Naphthoquinolizinones through Rh(III)-Catalyzed Double C(sp<sup>2</sup>)–H Bond Carbenoid Insertion and Annulation of 2-Aryl-3-cyanopyridines with α-Diazo Carbonyl Compounds
作者:Beibei Zhang、Bin Li、Xinying Zhang、Xuesen Fan
DOI:10.1021/acs.orglett.7b00839
日期:2017.5.5
and annulation of 2-aryl-3-cyanopyridines with α-diazo carbonyl compounds is presented. Through this cascade reaction, a series of naphthoquinolizinone derivatives with a large π-system were efficiently prepared. The reactions could selectively afford naphthoquinolizinones with either an amine or an amideunit attached on the 11-position depending on the nature of the solvent and the additive used
C3‐Cyanation of Pyridines: Constraints on Electrophiles and Determinants of Regioselectivity
作者:Ming Zhang、Qingyang Zhou、Heng Luo、Zi‐Lu Tang、Xiufang Xu、Xiao‐Chen Wang
DOI:10.1002/anie.202216894
日期:2023.2
C3-selective cyanation of pyridines was accomplished by a tandem process of borane-catalyzed pyridine hydroboration, substitution of the resulting dihydropyridine with a cyano electrophile, and finally oxidative aromatization. This method was suitable for use in late-stage cyanation of pyridine drugs.
[EN] HETEROCYCLIC COMPOUND, APPLICATION THEREOF AND PHARMACEUTICAL COMPOSITION COMPRISING SAME<br/>[FR] COMPOSÉ HÉTÉROCYCLIQUE, SON APPLICATION ET COMPOSITION PHARMACEUTIQUE LE COMPRENANT<br/>[ZH] 一种杂环化合物、其应用及含其的药物组合物