Several allenyl ketones possessing an aryl group were submitted to a new intramolecular endo-mode cyclization with BF3·OEt2 or TiCl4 in CH2Cl2 to afford the corresponding 6-, 7-, and 8-membered carbocyclic products.
在
CH2Cl2 中,用
BF3-OEt2 或 TiCl4 对几种带有芳基的烯基酮进行了新的分子内内向模式环化,得到了相应的 6、7 和 8 元碳环产物。