NEW CROSS ALDOL REACTIONS. THE REACTIONS OF SILYL ENOL ETHERS WITH KETO ESTERS PROMOTED BY TITANIUM TETRACHLORIDE
作者:Kazuo Banno、Teruaki Mukaiyama
DOI:10.1246/cl.1975.741
日期:1975.7.5
It was found that, in the presence of TiCl4, keto esters such as ethyl pyruvate, ethyl 2,2-dimethyl acetoacetate, ethyl levulinate and ethyl 5-oxohexanoate react with various trimethylsilyl enol ethers derived from ketones at room temperature to afford cross aldols, i.e., hydroxy keto esters, in good yields.
发现在 TiCl4 存在下,酮酯如丙酮酸乙酯、2,2-二甲基乙酰乙酸乙酯、乙酰丙酸乙酯和 5-氧代己酸乙酯在室温下与各种衍生自酮的三甲基甲硅烷基烯醇醚反应,得到交叉醛醇,即羟基酮酯,产率良好。