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有机化学
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有机化学 ›› 1986, Vol. 6 ›› Issue (3): 220-222. 上一篇    下一篇

研究论文

几种炔二醇在硫酸汞催化下的环化

程傅明;艾克蕙;戈传生;黎耀忠   

  1. 四川大学化学系
  • 发布日期:1986-06-25

Cyclization of acetylenic diols catalysed by mercuric sulfate

CHENG FUMING;AI KEHUI;GUO CHUANSHENG;LI YAOZHONG   

  • Published:1986-06-25

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387

本文报道几种炔二醇在硫酸汞催化下的环化反应.γ-炔二醇环化产物的羰基位于原炔二醇中叔醇羟基的β位,而δ-炔二醇水化产物的羰基则处于α位.

关键词: 催化, 环化, 炔烃 P, 硫酸 P, 汞化合物, 二元醇

The cyclization of acetylenic diols I (n = 1, R = R1 = H, RR1 = O) in the presence of HgSO4-H2SO4 gave oxocyclopentanones II (n = 1, R = R1 = H, RR1 = O). Similar reaction of I (n = 2, R = R1 = H) in Me2CO gave a mixture of III, IV and V, but no II (n = 2, R = R1 = H) was observed A mechanism for the formation of IV was proposed.

Key words: CATALYSIS, CYCLIZATION, ALKYNE P, SULFURIC ACID P, MERCURY COMPOUNDS, DIHYDRIC ALCOHOL

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