alkynylphenoxycyclopropanes in up to 80% yield. These reactions proceed through the intermediate formation of conjugated alkynylcyclopropenes capable of the in situ addition of alcohols at the double bond of the cyclopropene fragment. Regio- and stereoselectivity of the process is defined by the nature of substituents in the starting cyclopropanes and the structure of alcohols used.
1-(alk-1-ynyl)-1-卤代
环丙烷与醇或
苯酚在 KOH/
DMSO 中在 80–100 °C 下反应生成相应的炔基烷氧基和炔基苯氧基
环丙烷,产率高达 80%。这些反应通过能够在环
丙烯片段的双键处原位加成醇的共轭炔基环
丙烯的中间形成进行。该方法的区域选择性和立体选择性由起始
环丙烷中取代基的性质和所用醇的结构决定。