A novel highly stereoselective multi-component synthesis of N-substituted β-amino ketone derivatives using copper(II) phthalocyanine as reusable catalyst
作者:V.S. Shinu、P. Pramitha、D. Bahulayan
DOI:10.1016/j.tetlet.2011.04.016
日期:2011.6
Stereoselective synthesis of N-substituted β-amino ketone derivatives with substituents include one or two polar hetero atoms on benzene rings in many cases has been achieved by a one-pot multi-component process using copper(II) phthalocyanine as catalyst. The new process is suitable for the inclusion of a wide variety of substrates for the construction of highly functionalized Mannich-type structural
A modified Dakin‐West one‐pot, four‐component condensation of an aryl aldehyde, aryl ketone, acetyl chloride and acetonitrile in the presence of silicasupportedperchloricacid as an active, inexpensive, recoverable and recyclable catalyst is reported for the synthesis of β‐acetamido ketones under mechanical stirring and ultrasonic irradiation conditions. This system has advantages of short reaction
A modified procedure for the Dakin–West reaction: an efficient and convenient method for a one-pot synthesis of β-acetamido ketones using silica sulfuric acid as catalyst
作者:Mohammd M. Khodaei、Ahmad R. Khosropour、Peyman Fattahpour
DOI:10.1016/j.tetlet.2005.01.149
日期:2005.3
A one-pot, four-component condensation of an aryl aldehyde, an aryl ketone, acetyl chloride and acetonitrile in the presence of silica sulfuric acid as an active, inexpensive, recoverable and recyclable catalyst is disclosed for the synthesis of β-acetamidoketones.
One‐Pot, Four‐Component Reaction of Aryl Aldehydes, Aryl Ketones, Phosphorus Trichloride, and Acetonitrile Catalyzed by Acetyl Chloride: Synthesis of<i>β</i>‐Acetamido Ketones
作者:Mohammad Anary‐Abbasinejad、Azimeh Saidipoor
DOI:10.1080/00397910701767064
日期:2008.1.1
Abstract The one‐pot, four‐component reaction of aryl aldehydes, aryl ketones, phosphorustrichloride, and acetonitrile, catalyzed by acetyl chloride, affords β‐acetamido ketones in good to excellent yields. Silicaphosphine (silphos), [P(Cl)3‐n(SiO2)n], can also be used effectively as a solid‐supported reagent instead of phosphorustrichloride.
Silica Supported Tungstosilicic Acid as an Efficient and Reusable Catalyst for the One-Pot Synthesis of β-Acetamido Ketones via a Four-Component Condensation Reaction
Silicasupported tungstosilicic acid has been used as an effective catalyst for a modified Dakin-West one-pot, four- component condensation of an aryl aldehyde, an aryl ketone, acetyl chloride and acetonitrile for the synthesis of β-acet-amido ketones. This catalytic system can act as an active, inexpensive, recoverable and recyclable catalyst. Some advantages of this system are short reaction times