In situ generation of Iron(iii) dodecyl sulfate as Lewis acid-surfactant catalyst for synthesis of bis-indolyl, tris-indolyl, Di(bis-indolyl), Tri(bis-indolyl), tetra(bis-indolyl)methanes and 3-alkylated indole compounds in water
Synthesis and application of modified silica sulfuric acid as a solid acid heterogeneous catalyst in Michael addition reactions
作者:Mohammad Ali Zolfigol、Hojat Veisi、Farajollah Mohanazadeh、Alireza Sedrpoushan
DOI:10.1002/jhet.659
日期:2011.7
Modified silicasulfuricacid (MSSA) as a new type of silicasulfuricacid was prepared and effectively used in the conjugate addition of indole, pyrrole, and thiols with Michael acceptors under mild conditions at room temperature. Also, MSSA was used as a catalyst for the synthesis of 1,1,3‐tri‐indolyl compounds in good to excellent yield at room temperature. J. Heterocyclic Chem., (2011).
In situ generation of Iron(<scp>iii</scp>) dodecyl sulfate as Lewis acid-surfactant catalyst for synthesis of bis-indolyl, tris-indolyl, Di(bis-indolyl), Tri(bis-indolyl), tetra(bis-indolyl)methanes and 3-alkylated indole compounds in water
Iron(III) dodecyl sulfate as Lewis acid-surfactant catalyst was prepared in situ and effectively used in the synthesis of bis(indolyl)methanes and Michael reactions of indoles with α,β-unsaturated carbonyl compounds in water. Also, this method was used for the synthesis of 1,1,3-tri-indolyl compounds, producing good to excellent yield at room temperature.
Abstract A simple and novel bimetallic catalyst, an iron and magnesium complex (Fe‐Mg‐hexamethylphosphoramide (HMPA)), with dual activation was found to be an effective and promising catalyst for the Michael‐type Friedel–Craftsreactions of indoles with chalcones. This novel catalytic system has the advantages of highly efficient, mild reaction conditions and exhibits high reactivity and selectivity
摘要 一种简单而新颖的双金属催化剂,铁和镁配合物(Fe-Mg-六甲基磷酰胺(HMPA)),具有双重活化作用,被发现是吲哚与查耳酮的 Michael 型 Friedel-Crafts 反应的有效且有前景的催化剂。这种新型催化体系具有高效、反应条件温和、反应活性和选择性高的优点,使其成为合成吲哚衍生物的有用且有吸引力的方法。
Chlorotrimethylsilane: A Powerful Lewis Acidic Catalyst in Michael‐Type Friedel–Crafts Reactions of Indoles and Enones
作者:Li‐Wen Xu、Wei Zhou、Lei Yang、Chun‐Gu Xia
DOI:10.1080/00397910701544737
日期:2007.9.1
silicon Lewisacidcatalyst in catalyzing the Michael‐type Friedel–Craftsreactions of indoles and chalcones to afford corresponding 3‐substituted indole derivatives in good to excellent yields. The method is metal‐free, has mild reaction conditions, and generates good yields of products with greater selectivity, which make it a useful and attractive process for the synthesis of different indole derivatives