Thermal 1,6-Electrocyclization Reactions of Acceptor-Substituted 2,3-Divinyl-1H-indoles Yielding Functionalized Carbazoles
作者:Ulf Pindur、Reinhard Adam
DOI:10.1002/hlca.19900730408
日期:1990.6.20
Three new synthetic procedures for and thermal 1,6-electrocyclizations of acceptor-substituted 2,3-divinyl-1H-indoles leading to functionalizing carbazoles are described. The scope and limitations as well as some mechanistic aspects of the methodologies are discussed. The key strategies employed include Pd(II)-catalyzed coupling and Wittig procedures.
描述了三种新的合成方法,用于受体取代的2,3-二乙烯基-1 H-吲哚的1,6-电环化和热1,6-电环化,从而使咔唑官能化。讨论了方法的范围和局限性以及一些机械方面。所采用的关键策略包括Pd(II)催化的偶联和Wittig程序。