Synthesis of β-Amino Esters by Bismuth Triflate Catalyzed Three-Component Mannich-Type Reaction
作者:Thierry Ollevier、Etienne Nadeau
DOI:10.1055/s-2005-923594
日期:——
Bismuth triflate catalyzes the Mannich-typereaction of a variety of in situ generated aldimines using aldehydes, anilines, and silyl enol ethers in a three-componentreaction. The reaction proceeds rapidly and affords the corresponding protected beta-amino ketones in high yields (up to 94%).
An efficient and mild bismuth triflate-catalysed three-component Mannich-type reaction
作者:Thierry Ollevier、Etienne Nadeau
DOI:10.1039/b710794c
日期:——
In the presence of a catalytic amount of Bi(OTf)(3).4H(2)O, aldehydes together with amines react with silylenolates to afford the corresponding Mannich-type adducts smoothly. A wide variety of silylenolates derived from ketones, as well as esters and thioesters, react rapidly to afford the beta-amino ketones or the beta-amino esters in high yields (up to 94%).
Mannich-type reaction of (1-methoxy-2-methylpropenyloxy)trimethylsilane with arylaldehydes and aromatic amines catalyzed by perfluorinated rare earth metal salts in fluorous phase
作者:Min Shi、Shi-Cong Cui、Ying-Hao Liu
DOI:10.1016/j.tet.2005.03.059
日期:2005.5
reaction in fluorous phase. By use of perfluorodecalin (C10F18, cis- and trans-mixture) as a fluorous solvent and perfluorinated rareearth metal salts such as Sc(OSO2C8F17)3 or Yb(OSO2C8F17)3 (2.0 mol%) as a catalyst, the Mannich-type reaction of arylaldehydes with aromatic amines and (1-methoxy-2-methylpropenyloxy)trimethylsilane can be performed for many times without reloading the catalyst and the
在本文中,我们描述了在荧光相中有用的曼尼希型反应。通过使用全氟萘烷(C 10 F 18,顺式和反式混合物)作为氟溶剂和全氟化稀土金属盐,例如Sc(OSO 2 C 8 F 17)3或Yb(OSO 2 C 8 F 17)3通过使用(2.0摩尔%)作为催化剂,芳醛与芳族胺和(1-甲氧基-2-甲基丙烯氧基)三甲基硅烷的曼尼希型反应可以进行多次,而无需重新装载催化剂和氟溶剂。
Mannich‐Type Reaction Catalyzed by Silica‐Supported Fluoroboric Acid under Solvent‐Free Conditions
作者:WeiYi Chen、XinSheng Li、Jun Lu
DOI:10.1080/00397910701796766
日期:2008.1.1
Abstract Three‐component Mannich‐typereaction of aldehydes, aromatic amines, and silyl enolate proceeded smoothly to afford β‐amino carbonyl compounds with good yields in the presence of a catalytic amount of HBF4‐SiO2.