Die 2-(3-Benzo[b]thienyl)-thio-und 2-(3-Indoyl)-thio-benzoesäuren 2 cyclisieren mit Polyphosphorsäure (PPS) zu den Titelverbindungen 3, die als Sulfone und Thione charakterisiert werden。
Die 2-(3-Benzo[b]thienyl)-thio-und 2-(3-Indoyl)-thio-benzoesäuren 2 cyclisieren mit Polyphosphorsäure (PPS) zu den Titelverbindungen 3, die als Sulfone und Thione charakterisiert werden。
Cyclization of 2- and 3-indolylthiobenzoic, phenylacetic and nicotinic acids and esters to novel indole-containing tetracyclic ring systems
作者:Pierre Hamel、Mario Girard、Nancy N. Tsou
DOI:10.1002/jhet.5570360312
日期:1999.5
A series of 2- and 3-indolylthio benzoic, phenylacetic and nicotinicacids or esters were cyclized under dehydrative conditions affording several tetracyclicindole-containing ketones, several of which constitute the first reported examples of novelringsystems, such as the [1]benzothiepino[2,3-b] and [3,2-b]indole and the pyrido[3′2′:5,6] and [3′4′:5,6]thiopyrano[2,3-b] and [3,2-b]indole as well
在脱水条件下将一系列2-和3-吲哚硫基苯甲酸,苯乙酸和烟酸或酯环化,得到几个含四环吲哚的酮,其中几个构成了首次报道的新型环系统的实例,例如[1] benzothiepino [2,3- b ]和[3,2- b ]吲哚和吡啶基[3'2':5,6]和[3'4':5,6]硫代吡喃并[2,3- b ]和[ 3,2- b ]吲哚以及[3'2':5,6]和[3'4':5,6] [1,3]噻嗪基[3,2- a ]吲哚环系统。
Synthesis of benzothiopyrano[2,3- b ]indol-11-one and benzopyrano[2,3- b ]indol-11-one
作者:Robert Engqvist、Jan Bergman
DOI:10.1016/j.tet.2003.09.084
日期:2003.11
The fused heterocycles benzothiopyrano[2,3-b]indol-11-one and benzopyrano[2,3-b]indol-11-one, have been prepared from methyl 3-indole carboxylate in two steps.
由两步3-吲哚羧酸甲酯制备了稠合的杂环苯并硫代吡喃并[2,3- b ]吲哚-11-one和苯并吡喃并[2,3 - b ]吲哚-11-one。