Photocyclization of 1-(2-halophenyl)-3,4-dihydro-6,7-dimethoxyisoquinolines: a short and new synthesis of triclisine
摘要:
A short and new synthesis of the non-phenolic azafluoranthene alkaloid triclisine utilizing the photocyclization of 1-(2-halophenyl)-3,4-dihydro-6,7-dimethoxyisoquinolines as a key step has been described. (c) 2005 Elsevier Ltd. All rights reserved.
A convenient and general asymmetric transferhydrogenation of a wide array of 1-aryl-3,4-dihydroisoquinoline derivatives using a [RuIICl(η6-benzene)TsDPEN] complex in combination with a 5:2 HCOOH–Et3N azeotropic mixture as a hydrogen source was developed. Under mild reaction conditions, the described catalytic transformation secured a practical synthetic access to the corresponding valuable chiral
Ruthenium-Catalyzed Asymmetric Transfer Hydrogenation of 1-Aryl-Substituted Dihydroisoquinolines: Access to Valuable Chiral 1-Aryl-Tetrahydroisoquinoline Scaffolds
Give me an H! Give me another H! The first general and highly enantioselective Ru‐catalyzed transferhydrogenation of a wide range of 1‐aryl‐substituted 1,2,3,4‐dihydroisoquinolines is described. This atom‐economic reaction proceeds under mild conditions, allowing rapid access to the corresponding biologically relevant 1‐aryl‐tetrahydroisoquinoline derivatives, in high yields and enantioselectivities
Silver- and Gold-Mediated Intramolecular Cyclization to Substituted Tetracyclic Isoquinolizinium Hexafluorostilbates
作者:Fang Liu、Xiao Ding、Lei Zhang、Yu Zhou、Linxiang Zhao、Hualiang Jiang、Hong Liu
DOI:10.1021/jo1006174
日期:2010.9.3
A convenient route for the synthesis of various charged tetracyclic isoquinolizinium hexafluorostilbates was developed using AgSbF6/AuCl(PPh3) for the intramolecular addition of amine to alkyne. The described process is tolerant of a variety of functional groups and broadens the diversity of substrates with the use of 8-substituted tetracyclic isoquinolizinium salts.