An expeditious synthesis of substituted and annelated pyrido[2,3-b]indoles
作者:Okram Barun、Pranab K Patra、H Ila、H Junjappa
DOI:10.1016/s0040-4039(99)00530-4
日期:1999.5
An efficient and versatile synthesis of substituted and annelated pyrido[2,3-b]indoles (α-carboline) involving conjugate displacement on α-oxoketenedithioacetals by 1-methyl-2-oxoindole enolate anion and subsequent cyclization of the adducts in the presence of ammonium acetate has been described.
一种高效且通用的取代和退火的吡啶并[2,3- b ]吲哚(α-咔啉)合成方法,包括通过1-甲基-2-氧代吲哚烯醇阴离子在α-氧杂环丁烯二硫缩醛上进行共轭置换,然后在存在下环化加合物已经描述了乙酸铵的制备。
α-Oxoketene dithioacetals mediated heteroaromatic annulation protocol for benzoheterocycles: an efficient regiocontrolled synthesis of highly substituted and annulated indazoles
作者:S Peruncheralathan、T.A Khan、H Ila、H Junjappa
DOI:10.1016/j.tet.2004.02.029
日期:2004.4
An efficient regiocontrolled synthesis of highly substituted and annulated indazoles involving base induced addition–elimination of 1,3-diphenyl-5-cyanomethylpyrazole to a variety of acyclic and cyclic α-oxoketene, followed by acid assisted cycloaromatization of the resulting conjugate adducts has been reported.