Synthesis Of Β-acetamido Carbonyl Compounds Research Articles

Solid-supported sulfonic acid-containing catalysts efficiently promoted one-pot multi-component synthesis of β-acetamido carbonyl compounds

Silica-functionalized sulfonic acid (SFSA) and sulfuric acid-modified polyethylene glycol-6000 (PEG-OSO3H) efficiently catalysed one-pot multi-component condensation of enolizable ketones or alkyl acetoacetates with arylaldehydes, acetonitrile and acetyl chloride to afford the corresponding β-acetamido ketone or ester derivatives in high to excellent yields and in relatively short reaction times. Moreover, in this work, some novel β-acetamido carbonyl compounds (i.e., one complex structure) are synthesized. Silica-functionalized sulfonic acid (SFSA) and sulfuric acid-modified polyethylene glycol-6000 (PEG-OSO3H) efficiently catalysed one-pot multicomponent synthesis of β-acetamido ketone or ester derivatives in good to excellent yields and in relatively short reaction times.

One-pot three-component synthesis of β-acetamido carbonyl compounds catalyzed by heteropoly acids

A simple one-pot method for a new Mannich-type reaction is reported. In this method a heteropoly acid is used as a catalyst for the synthesis of β-acetamido carbonyl compounds via a three-component reaction of an aldehyde, acetamide, and dimedone in acetonitrile at room temperature. This method offers several advantages such as good yields, simple procedure, low cost, and ease of workup.

CuSO4 · 5H2O: A Novel, Green, Reusable, and Environmentally Friendly Catalyst for the One-Pot, Four-Component Synthesis of β-Acetamido Carbonyl Compounds

Multicomponent reactions for the synthesis of β-acetamido carbonyl compounds have been gained considerable attention in organic synthesis. In this articles, aromatic aldehydes have been employed in a one-pot reaction with enolizable ketones, acetonitrile, benzonitrile, and acetyl chloride in the presence of copper(II) sulfate petahydrate at ambient temperature to afford the corresponding β-acetamido ketones in very good yields. New compounds are reported. The use of readily available copper(II) sulfate petahydrate as a reusable and recyclable catalyst makes this process quite simple, convenient, and environmentally friendly.

Cerium(IV) sulfate catalyzed simple and convenient synthesis of β-acetamidocarbonyl compounds

A simple and convenient protocol for the synthesis of β-acetamido ketones has been described by one-pot three-component reaction of aromatic aldehydes and enolizable ketones or β-keto esters and acetonitrile using cerium(IV) sulfate as a catalyst. The present methodology offers several advantages such as excellent yields, non hazardous reaction condition and short reaction times.

Fe(ClO4)3· 6H2O: a mild and efficient catalyst for one-pot three component synthesis of β-acetamido carbonyl compounds under solvent-free conditions

A one-pot multi-component reaction for the synthesis of beta-acetamido carbonyl compounds is reported. The reaction uses a variety of aldehydes, acetophenone derivatives or methyl acetoacetate, acetonitrile, and acetyl chloride in the presence of ferric perchlorate, a mild, efficient and inexpensive catalyst effective under solvent free conditions.

Zr(HSO4)4 and Mg(HSO4)2 as mild and efficient catalysts for the one-pot multicomponent synthesis of β-acetamido carbonyl compounds

An efficient one-pot three-component coupling process for the synthesis of β-acetamido ketones or esters catalyzed by Zr(HSO 4 ) 4 and Mg(HSO 4 ) 2 at room temperature has been described. The mechanism of this reaction was also studied. The present methodology offers several advantages such as excellent yield, simple procedure, short reaction time and milder conditions. Synthesis of β-acetamido carbonyl compounds by the one-pot multicomponent coupling of an aromatic aldehyde, an enolisable ketone or keto ester, acetonitrile, and acetyl chloride using Zr(HSO 4 ) 4 and Mg(HSO 4 ) 2 as mild, inexpensive, and highly efficient catalysts is studied in the present article.

Sulfamic acid as a cost-effective catalyst instead of metal-containing acids for the one-pot synthesis of β-acetamido ketones

An efficient and improved procedure for the synthesis of β-acetamido carbonyl compounds is developed using sulfamic acid (SA) as a reusable, green catalyst at room temperature.

Iron(III) chloride-catalyzed convenient one-pot synthesis of β-acetamido carbonyl compounds

A one-pot multi-component reaction of aldehydes, enolizable ketones or 1,3-dicarbonyls, acetonitrile/benzonitrile, and acetyl chloride is described for the preparation of β-acetamido carbonyl compounds using FeCl 3·6H 2O as a mild, inexpensive, and highly efficient catalyst. The effect of substrate as well as substituent for multi-component reaction versus Knoevenagel condensation is also illustrated. The key features of this methodology are operational simplicity, mild reaction conditions, and good yields.

A modified and green Dakin–West reaction: An efficient and convenient method for a one-pot synthesis of β-acetamido carbonyl compounds

An efficient and improved procedure for the synthesis of β-acetamido carbonyl compounds is developed in the presence of trimethylsilyl chloride by a heteropolyacid catalyzed three-component coupling protocol.

A simple and efficient one-pot synthesis of β-acetamido carbonyl compounds using sulfated zirconia as a heterogeneous recyclable catalyst

Sulfated zirconia has been employed as an efficient recyclable catalyst for the preparation of various β-acetamidoketones or esters at room temperature. The process involves the one-pot multicomponent reactions of aromatic aldehydes, enolizable ketones or β-ketoesters and acetonitrile in the presence of acetyl chloride.

H6P2W18O62: An efficient and reusable catalyst for one-pot synthesis of β-acetamido ketone and esters

An efficient and improved procedure for the synthesis of β-acetamido carbonyl compounds is developed by a Wells–Dawson type Heteropolyacid catalyzed three-component coupling protocol.

Synthesis of Mannich Type Products via a Three‐Component Coupling Reaction.

AbstractFor Abstract see ChemInform Abstract in Full Text.

Synthesis of Mannich type products via a three-component coupling reaction

The reactions of alkyl nitriles, acetyl chloride, aldehydes and β-ketoesters or simple ketones was studied for the one-pot synthesis of β-acetamido carbonyl compounds. It was observed that the reaction proceeds in the absence of Lewis acids. However, a Lewis acid catalyzes the reaction and several were tested. It was found that whereas Cu(OTf) 2 is suitable for the coupling of β-ketoesters with aldehydes, Sc(OTf) 3 is the best for ketones. A possible mechanism is proposed based on the isolation and characterization of an intermediate.

Cobalt‐Catalyzed One‐Pot Three‐Component Coupling Route to β‐Acetamido Carbonyl Compounds: A General Synthetic Protocol for γ‐Lactams.

AbstractFor Abstract see ChemInform Abstract in Full Text.