对 3-含氧酸的几种苯胺在与硝酸铈铵的氧化反应中的行为的研究表明,选择性分子间 CC 键形成,导致它们的二聚体,是这些化合物的典型特征。这些二聚体在两条路线 A 和 B 中环化,产生 3-[2'-(1'-aniline-3'-oxo)-indene]-quinoline-2-on 衍生物与 HCl(g)(路线 A ),并使用 H2SO4 作为环化剂,得到呋喃-3,4-二羧酸衍生物(路线 B)。
Polycarbonyl heterocycles, Part IX1: Synthesis of thiophene-2,3-dione derivatives and their transformation to pyrrolo[3,2-c]pyridine systems
作者:Barbara Zaleska、Dariusz Cież、Jerzy Klimek
DOI:10.1016/s0040-4039(98)00812-0
日期:1998.6
Thiophene-2,3-dione derivatives 2 were prepared in the reaction of β-aminovinylthioamides 1 with ethyl oxalyl chloride. Treatment of compounds 2b,c with malonodinitrile led to the ring transformation of the thiophene-2,3-dione system to pyrrolo[3,2-c]pyridinederivatives 4b,c.
通过β-氨基乙烯基硫代酰胺1与乙二酰氯乙基的反应制备噻吩-2,3-二酮衍生物2。用丙二腈处理化合物2b,c导致噻吩-2,3-二酮系统环转化为吡咯并[3,2- c ]吡啶衍生物4b,c。
New Synthesis of Some Isothiazol and 1,2,4-Dithiazol Derivatives
作者:B. Zaleska、D. Ciez、A. Haas
DOI:10.1080/00397919608004654
日期:1996.11
treatment of 3-anilino thiocinnamic acid anilides 1 with trifluoromethylsulfenyl chloride 3 leads to intramolecular cyclisation of 1 resulting in isothiazol system 4 with excellent yields. Anilides of 3-oxothioacids 2 react with 3 to give 1,2,4-dithiazol derivative 5, product of intermolecular cyclisation. Physical data of the novel compounds are reported.