The Mannich Reaction Between Aromatic Ketones, Aromatic Aldehydes and Aromatic Amines
作者:Yi Lin、Lei Huangshu、Zou Junhua、Xu Xiujuan
DOI:10.1055/s-1991-26554
日期:——
The acid-catalyzed Mannich reaction of acetophenones with benzaldehyde derivatives and aromatic amines gives 1,3-diaryl-3-(arylamino)propanones in high yield.
One-pot three-component Mannich reaction in water catalyzed by eco-friendly, hydrophobic and recyclable sulfonic acid based nanosilica (SBA-15-Ph-PrSO<sub>3</sub>H)
作者:Daryoush Zareyee、Hamidreza Alizadeh
DOI:10.1039/c4ra05842a
日期:——
A mild, effective and green method for the Mannich reaction of aromatic aldehydes, aromatic amines and ketones has been accomplished in good to excellent yields using hydrophobic SBA-15-Ph-PrSO3H in water at room temperature.
Sulfonic acid supported on magnetic nanoparticle as an eco-friendly, durable and robust catalyst for the synthesis of β-amino carbonyl compounds through solvent free Mannich reaction
A simple, efficient and environmentally benign solid acid catalyst was prepared by anchoring a propyl sulfonic acid on the surface of silica‐coated magnetic nanoparticles by low cost precursors. The catalyst has been then engaged in the efficient β‐amino carbonyl compounds production via three component Mannich reaction under solvent free reaction condition at room temperature. After the completing
PPh3 was used as an efficient catalyst for the one-pot three-component Mannich reactions of acetophenone with different aromatic amines and aromatic aldehydes under solvent-free conditions at room temperature. This method provides a novel and improved method for preparing β-amino carbonyl compounds in the absence of acidic catalyst in excellent yield. Little catalyst loading, easy accessibility of the catalyst, mild conditions, and simple work-up procedure are the main features of this protocol.