Synthesis of β-amino alcohols using the tandem reduction and ring-opening reaction of nitroarenes and epoxides
作者:Chongyang Shi、Cheng Ren、Erlei Zhang、Huile Jin、Xiaochun Yu、Shun Wang
DOI:10.1016/j.tet.2016.04.083
日期:2016.7
A high yield one-pot synthesis of β-amino alcohols from nitroarenes and 1,2-epoxides was developed, which utilizes inexpensive iron dust as a reducing agent and NH4Cl as the only additive in a 50% (v/v) ethanol solution. This new efficient synthetic approach tolerates a wide range of functionalities. The mild reaction conditions (e.g., 60 °C), together with the use of low cost and readily available
An efficient and rapid procedure for ring opening of various epoxides with aromatic, aliphatic and heterocyclicamines is developed at room temperature under solvent-free conditions in the presence of (C4H12N2)2[BiCl6]Cl·H2O (1 mol %). This catalyst can be reused several times without losing of its activity.
在(C 4 H 12 N 2)2 [BiCl 6 ] Cl·H 2 O存在下,在室温下在无溶剂的条件下,开发了一种高效快速的方法,可用于芳族,脂族和杂环胺的各种环氧化物的开环。(1摩尔%)。该催化剂可以重复使用几次而不会失去其活性。
ZrCl4 as a new and efficient catalyst for the opening of epoxide rings by amines
作者:Asit K Chakraborti、Atul Kondaskar
DOI:10.1016/j.tetlet.2003.09.046
日期:2003.11
catalyses the nucleophilicopening of epoxide rings by amines leading to the efficient synthesis of β-amino alcohols. The reaction works well with aromatic and aliphatic amines in short times at room temperature in the absence of solvent. Exclusive trans stereoselectivity is observed for cyclic epoxides. Aromatic amines exhibit excellent regioselectivity for preferential nucleophilic attack at the
Green Progression for Synthesis of Regioselective β-Amino Alcohols and Chemoselective Alkylated Indoles
作者:Boningari Thirupathi、Rapelli Srinivas、Avvari N. Prasad、J. K. Prashanth Kumar、Benjaram M. Reddy
DOI:10.1021/op1002177
日期:2010.11.19
Solid acid catalysts based on zirconia materials were investigated for the first time as catalysts for regioselective organic synthesis under environmentally benign and mild conditions. The novel TiO2−ZrO2 mixed oxide catalyst led to two distinct products by the formation of an N−C bond (β-aminoalcohols) and a C−C bond (Friedel−Crafts alkylation).
Fe(III) substituted Wells–Dawson type polyoxometalate: An efficient catalyst for ring opening of epoxides with aromatic amines
作者:N. Aramesh、B. Yadollahi、V. Mirkhani
DOI:10.1016/j.inoche.2012.11.005
日期:2013.2
Abstract Various β -aminoalcohols were prepared by the ring opening reaction of epoxides with aromatic amines in the presence of Fe(III) substituted Wells–Dawson type polyoxometalate, α 2 -[(n-C 4 H 9 ) 4 N] 7 P 2 W 17 FeO 61 ·3H 2 O, as an efficient catalyst. The reaction was performed under neutral condition at room temperature and afforded the corresponding products in high to excellent yields.
摘要 在 Fe(III) 取代的 Wells-Dawson 型多金属氧酸盐 α 2 -[(nC 4 H 9 ) 4 N] 7 P 2 W 17 存在下,通过环氧化物与芳香胺的开环反应制备了各种 β-氨基醇。 FeO 61 ·3H 2 O,作为一种高效的催化剂。该反应在室温下中性条件下进行,并以高产率至极好的收率提供相应的产物。