A simple and efficient synthesis of isoquinoline and 3,4-dihydroisoquinoline derivatives is described. 1-Alkyl(or aryl)isoquinoline and 1-isoquinolinamine derivatives were obtained by intramolecula...
α-substituted 2-bromo-β-methoxystyrene derivatives and n-butyllithium generates α-substituted 2-lithio-β-methoxystyrene derivatives, which successfully react with a range of nitriles to afford the corresponding 1,4-disubstituted isoquinolines in reasonable yields.
Synthesis and Application of Heterocyclic Germatranes via Rhodium‐Catalyzed Directed C−H Activation/Annulation with Alkynyl Germatranes and Palladium‐Catalyzed Cross‐Coupling
作者:Meng‐Yu Xu、Chao Wang、Wei‐Tao Jiang、Bin Xiao
DOI:10.1002/adsc.201901633
日期:2020.4.17
Rhodium‐catalyzedC−Hactivation and annulation with alkynyl germatranes for the synthesis of heterocyclic germatranes is described. Various heterocyclic germatranes were constructed by this protocol and applied in multiple derivatizations such as palladium‐catalyzed cross‐coupling reactions.
A simple and efficient synthesis of 1-alkyl(or aryl)isoquinoline and isoquinolin-1-amine derivatives based on intramolecular cyclization of 2-(2-methoxyethenyl)benzonitriles initiated by the addition of alkyl(or aryl)lithiums and lithium dialkylamides to the nitrile carbons, respectively, is described.