KAl (SO4)2.12H2O or KHSO4: Efficient and Inexpensive Catalysts for the One-Pot Synthesis of β-Acetamido Ketones by Dakin–West Reaction
摘要:
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.