Tetrachlorosilane-Zinc Chloride as a New Potent Binary Reagent for One-Pot, Three-Component Synthesis of Mannich-Type Products
作者:Doria S. Badawy、Ebrahim Abdel-Galil、Ezzat M. Kandeel、Wahid M. Basyouni、Tamer K. Khatab
DOI:10.1080/10426500802589907
日期:2009.10.30
A combination of tetrachlorosilane and zinc chloride in dichloromethane as an efficient and ambient binary reagent to promote a one-pot amidoalkylation reaction of enolizable ketones, aromatic aldehydes with acetonitriles, or benzonitrile have been developed. The newly synthesized beta-acetamidoketones 3 and beta-benzamidoketones 5 were obtained in good yields.
KAl (SO<sub>4</sub>)<sub>2</sub>.12H<sub>2</sub>O or KHSO<sub>4</sub>: Efficient and Inexpensive Catalysts for the One-Pot Synthesis of β-Acetamido Ketones by Dakin–West Reaction
作者:Majid M. Heravi、Masoumeh Zakeri、Narges Mohammadi、Hoda Haghi
DOI:10.1080/15533174.2011.609514
日期:2012.2.1
Aromatic aldehydes were reacted in a vessel with enolizable ketones, acetonitrile, and acetyl chloride at ambient temperature in the presence of KAl(SO4)(2)center dot 12H(2)O to furnish the corresponding beta-acetamido ketones in excellent yields. KHSO4 has also been used as another catalyst for this reaction at room temperature. Key features of this methodology are operational simplicity, mild reaction conditions, and excellent yields.
Efficient Synthesis of β-Acetamido Ketones by Silver(I) Triflate-Catalyzed Multicomponent Reactions
作者:Rameshwar Prasad Pandit、Yong Rok Lee
DOI:10.5012/bkcs.2012.33.11.3559
日期:2012.11.20
An efficient one-pot synthesis of $\beta}$-acetamido ketones was accomplished by AgOTf-catalyzed multicomponent reactions of substituted acetophenones with aromatic aldehydes and acid chloride in acetonitrile in high yields. The methods offer several significant advantages of easy handling, mild reaction conditions, and use of effective and non-toxic catalyst.