A versatile and highly efficient method for the direct synthesis of α-keto esters and 1,2-diketones has been developed. This approach utilizes the oxidative cleavage of a variety of β-ketoesters and 1,3-diketones mediated by an Oxone/aluminum trichloride system. The simple one-step oxidation reaction proceeded selectively in aqueous media to afford products in high yields, short reaction times, and
[2+2+1+1] Cycloaddition Reaction of 1,3,5‐Triazinanes with Methylene Compounds: Approach to Hexahydropyrimidines
作者:Yuting Tian、Ziyang Chen、Kexin Su、Yongsheng Zheng、Jikai Liu
DOI:10.1002/adsc.202300490
日期:2023.11.21
An acetic acid-catalyzed [2+2+1+1] cycloaddition of 1,3,5-triazinanes with methylene compounds was developed. This protocol provides an access to hexahydropyrimidines (HHPs) (25 examples) in 35–99% yields under mild conditions in 2 hours. The potential application of this method was demonstrated by gram-scale synthesis. Preliminary mechanistic investigation was conducted to elucidate the possible mechanism