报道了一种通过N-甲酰基保护的α-氨基腈直接还原水解来高效,高选择性合成1,2-氨基醇的新方法。发现可商购获得的RuHCl(CO)(PPh 3)3络合物对于该操作简单的方案是合适的催化剂,其中不产生化学计量的不希望的金属废物。脱氨氢化反应在55 bar H 2下进行,使用1,4-二恶烷/水的6:1混合物作为溶剂。另外,在非常相似的条件下由氰基酮制备羟甲基醇。
Synthesis of novel magnetic nanoparticles with urea or urethane moieties: Applications as catalysts in the Strecker synthesis of α-aminonitriles
作者:Saeed Baghery、Mohammad Ali Zolfigol、Romana Schirhagl、Masoumeh Hasani、Marc C.A. Stuart、Andreas Nagl
DOI:10.1002/aoc.3883
日期:2017.12
Four novel magneticnanoparticlecatalysts with urea or urethane moieties are reported. The silica‐coated magneticnanoparticles were simply functionalized via addition of 3‐(triethoxysilyl)propylisocyanate (TESPIC), amine or amino alcohol. TESPIC with dual labile functional groups was used as a suitable precursor for the synthesis of urethane‐based catalysts. The newly synthesized catalysts were fully
Catalyst-Free Strecker Reaction in Water: A Simple and Efficient Protocol Using Acetone Cyanohydrin as Cyanide Source
作者:Paola Galletti、Matteo Pori、Daria Giacomini
DOI:10.1002/ejoc.201100089
日期:2011.7
nitriles through a one-pot, three-componentStreckerreaction of a carbonyl compound, amine, and acetone cyanohydrin in water has been developed. Reactions proceed very efficiently without any catalyst at room temperature with high chemoselectivity and give, in some cases, the expected α-amino nitrile pure after direct separation from water. The protocol is particularly efficient for both aliphatic and
K<sub>5</sub>CoW<sub>12</sub>O<sub>40</sub> · 3H<sub>2</sub>O: Heterogeneous Catalyst for the Strecker‐Type Aminative Cyanation of Aldehydes and Ketones
作者:Ezzat Rafiee、Alireza Azad
DOI:10.1080/00397910701198914
日期:2007.4.1
Abstract One‐step synthesis of α‐aminonitriles was successfully carried out by a three‐component condensation of aldehydes or ketones, amines, and potassium cyanide in the presence of a catalytic amount of K5CoW12O40·3H2O as an efficient, reusable, and nontoxic catalyst.
Trimethylsilyl cyanide was found to react with Schiff bases and oximes in the presence of a catalytic amount of Lewis acids to afford N-trimethylsilyl-α-aminonitriles and N-trimethylsilyloxy-α-aminonitriles in excellent yields, which were easily hydrolyzed to the corresponding α-aminonitriles and α-hydroxyaminonitriles.
Indium trichloride catalyzed one-step synthesis of α-amino nitriles by a three-component condensation of carbonyl compounds, amines and potassium cyanide
作者:Brindaban C Ranu、Suvendu S Dey、Alakananda Hajra
DOI:10.1016/s0040-4020(02)00132-1
日期:2002.3
A simple and general method has been developed for the synthesis of α-aminonitriles by a one-pot three-component condensation of aldehydes or ketones, amines and potassium cyanide in THF in presence of a catalytic amount of indium trichloride.