AgOTf-catalyzed one-pot reaction of 2-alkynylbenzaldehyde, amine, and sodium borohydride
作者:Qiuping Ding、Xingxin Yu、Jie Wu
DOI:10.1016/j.tetlet.2008.02.143
日期:2008.4
One-pot reactions of 2-alkynylbenzaldehydes, amines, and sodiumborohydride catalyzed by AgOTf under mild conditions provide a facile protocol for the concise synthesis of 1,2-dihydroisoquinoline derivatives.
Synthesis of 1H-Isochromenes and 1,2-Dihydroisoquinolines by Indium(III)-Catalyzed Cycloisomerization of ortho-(Alkynyl)benzyl Derivatives
作者:Luis A. Sarandeses、José Pérez Sestelo、Fabio Seoane-Carabel、Lorena Alonso-Marañón
DOI:10.1055/s-0042-1751383
日期:——
1H-Isochromenes and 1,2-dihydroisoquinolines are synthesized by regioselective indium(III)-catalyzed intramolecular hydrofunctionalization of o-(alkynyl)benzyl derivatives. The reaction with o-(alkynyl)benzyl alcohols and amines proceeds using indium triiodide (5–10 mol%) in toluene at 80–100 °C via regioselective 6-endo-dig intramolecular alkyne hydroalkoxylation or hydroamination in good yields.