α,α-二羰(酯)基烯酮环二硫代缩醛的合成研究

SYNTHESIS OF α,α-DIOXO(ESTER)KETENE DITHIOACETALS

定量合成α，α－二羰（酯）基烯酮环二硫代缩醛．共合成七个未见文献报导的新化合物，并通过ＩＲ。

We have synthesized quantitatively α,α-dioxo(ester)ketene dithioacetals from β-di(ester)ketone under the warm condition. Seven new compounds have been prepared for the first time. All products are confirmed with elemental analysis,IR and'H-NMR.