Rh<sup>II</sup><sub>2</sub>-Catalyzed Synthesis of α-, β-, or δ-Carbolines from Aryl Azides
作者:Ashley L. Pumphrey、Huijun Dong、Tom G. Driver
DOI:10.1002/anie.201201788
日期:2012.6.11
isomers: A range of α‐, β‐ and δ‐carbolinium ions are readily available from ortho‐substituted arylazides using a rhodium(II) carboxylate catalyst (see scheme). The carbolinium ions are readily reduced to afford tryptolines or deprotonated to access pyridoindoles. This [RhII2]‐catalyzed CH bond amination was used in the synthesis of (±)‐horsfiline and neocryptolepine. esp=α,α,α′,α′‐ tetramethyl‐1,3
接近所有异构体:使用羧酸铑 (II) 催化剂可从邻位取代芳基叠氮化物中轻松获得一系列 α-、β- 和 δ-咔啉鎓离子(参见方案)。咔啉离子很容易被还原以提供色氨酸或去质子化以获取吡啶并吲哚。这种 [Rh II 2 ]-催化的 C H 键胺化用于合成 (±)-horsfiline 和新隐碱。esp=α,α,α',α'-四甲基-1,3-苯二丙酸酯。
Regiodivergent Synthesis of 11
<i>H</i>
‐Indolo[3,2‐
<i>c</i>
]quinolines and Neocryptolepine from a Common Starting Material
作者:Katja S. Håheim、Bjarte Aarmo Lund、Magne O. Sydnes
DOI:10.1002/ejoc.202300137
日期:——
A common intermediate gives easy access to both neocryptolepine and isocryptolepine analogues in up to 80 % and 95 % yield, respectively.
一种常见的中间体可以很容易地以高达 80% 和 95% 的收率分别获得新隐藤碱和异隐藤碱类似物。
Straightforward synthesis of 11H-indolo[3,2-c]isoquinoline and benzofuro[3,2-c]isoquinoline by ring transformation
作者:Mariann Béres、Géza Timári、György Hajós
DOI:10.1016/s0040-4039(02)01244-3
日期:2002.8
An efficient method was established for the synthesis of 11H-indolo[3,2-c]isoquinoline and benzofuro[3,2-c]isoquinoline using thermal ring transformation of a benzisoxazolo[2,3-a]isoquinoline salt. (C) 2002 Elsevier Science Ltd. All rights reserved.