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
imidazolium hydrogensulfate ([Sipim]HSO4) as a heterogeneous acidic ionic liquid is described. This heterogeneous ionic liquid was used as catalyst for the synthesis of α-aminonitriles by a one-pot condensation of aldehydes, amines, and trimethylsilyl cyanide at roomtemperature. Catalyst could be recycled for several times without any additional treatment.Graphical AbstractA simple and efficient procedure
Silica Boron Sulfuric Acid Nanoparticles: As an Efficient and Reusable Catalyst for the Large-Scale Synthesis of α-Amino Nitriles Using the Strecker Reaction
A highly efficient and green procedure for the large-scale synthesis of α-amino nitriles using three-component condensation of carbonyl compounds, amines, and trimethylsilylcyanide has been developed. Silica boron sulfuricacid nanoparticles (SBSANs) are found as an efficient heterogeneous catalyst for the promotion of this process at room temperature undersolvent-freeconditions. This protocol offers