General Synthetic Method for Naphthyridines and Their N-Oxides Containing Isoquinolinic Nitrogen
作者:Atsushi Numata、Yoshinori Kondo、Takao Sakamoto
DOI:10.1055/s-1999-3379
日期:1999.2
Substituted naphthyridines containing isoquinolinic nitrogen were synthesized by the reaction of o-ethynylpyridinecarbaldehydes with ammonia. The synthesis of their N-oxides was also achieved by a basic cyclization reaction of the same pyridine derivatives via the corresponding oximes.
TiCl<sub>4</sub>-Catalyzed Indirect Anti-Markovnikov Hydration of Alkynes: Application to the Synthesis of Benzo[<i>b</i>]furans
作者:Lutz Ackermann、Ludwig T. Kaspar
DOI:10.1021/jo070887i
日期:2007.8.1
An efficient methodology for the indirect anti-Markovnikov hydration of unsymmetrically substituted terminal and internal alkynes is based on TiCl4-catalyzed hydroamination reactions. Its application to ortho-alkynylhaloarenes, followed by a copper-catalyzed O-arylation, provides flexible access to substituted benzo[b]furans.
一种不对称取代的末端和内部炔烃的间接反马氏水合的有效方法是基于TiCl 4催化的加氢胺化反应。其在邻炔基卤代芳烃上的应用,然后在铜催化的O-芳基化反应中,可以灵活地获得取代的苯并[ b ]呋喃。