Highly efficient one-pot, three-component Mannich reaction catalysed by boric acid and glycerol in water with major ‘syn’ diastereoselectivity
作者:Chhanda Mukhopadhyay、Arup Datta、Ray J. Butcher
DOI:10.1016/j.tetlet.2009.04.135
日期:2009.7
Boric acid and glycerol efficiently catalysed the one-pot, three-componentMannichreaction of aldehydes, aromatic amines and cyclic ketones in water at ambient temperature to afford the corresponding β-amino carbonyl compounds in good yields. All but one reaction proceeded with moderate ‘syn’ diastereoselectivity. This observation is just the reverse of the major anti diastereoselectivity obtained
Zn[(L)proline]2 was used as an efficient catalyst for the one‐pot multicomponent reactions (MCR) of different aromatic amines, aromatic aldehyde and ketones in aqueous media. This method provides a novel and improved method for obtaining stereoselective β‐amino carbonylcompounds in terms of good yield. Little catalyst loading, recyclability, easy accessibility of the catalyst and aqueous media are
Diastereoselective Mannich reaction with prolinated MWCNTs as a heterogeneous organo-nanocatalyst
作者:Mahsa Khoshnevis、Hossein Eshghi
DOI:10.1007/s12039-020-1740-4
日期:2020.12
Mannich reaction. The results hold out improvements in stereoselectivity, ease of separating and reusability. Graphic Abstract This work represents an efficient and simple method to prepare Prolinated- MWCNTs as a heterogeneous organo-nanocatalyst. Prolinated-MWCNT was characterized by different analyses. The efficiency and catalytic activity of Pro-MWCNTs have investigated in mannich reaction, which
Novel ionic liquid supported on Fe3O4 nanoparticles and its application as a catalyst in Mannich reaction under ultrasonic irradiation
作者:Javad Safaei Ghomi、Safura Zahedi
DOI:10.1016/j.ultsonch.2016.08.003
日期:2017.1
A family of novel ionicliquid with l-alanine and choline chloride as environmentally benign materials have been synthesized and grafted on Fe3O4 nanoparticles using easy preparation techniques. The structure of ionicliquid supported on Fe3O4 nanoparticles (IL-Fe3O4 NPs) characterized by various analyses such as FE-SEM, EDX, XRD, NMR, FTIR and VSM. The catalytic activities of this catalyst are examined