alkaline earth salt of/the/ methylsulfuric acid 在
silica gel 作用下,
反应 8.0h,
以44%的产率得到
参考文献:
名称:
Short path to the synthesis of bi- and tricyclic compounds containing the 3-oxabicyclo[3.3.0]octene fragment from conjugated enynes by successive AdE reaction and [2+2+1]-cycloaddition