Treatment of a mixture of α-halogeno-esters and carbonyl compounds with low-valent tantalum prepared readily from tantalum(V) chloride and activated zinc, afforded β-hydroxy-esters in moderate to good yields.
以
五氯化钽和活性
锌方便制备的低价
钽处理α-卤代酯和羰基化合物混合物,可得到中等至良好产率的β-羟基酯。