compounds and nitriles undergo a smooth tandem Prins–Ritter type cyclization in the presence of CeCl3·7H2O/AcCl at ambient temperature to produce 4-amido tetrahydropyrans in high yields with all cis-selectivity. Spirocyclic 4-amido tetrahydropyrans are obtained in the case of cyclic ketones.
在环境温度下,在CeCl 3 ·7H 2 O / AcCl存在下,均
烯丙醇,羰基化合物和腈类进行顺式串联的Prins-Ritter型环化反应,以高收率和所有顺式选择性生成
4-氨基四氢吡喃。在环状酮的情况下获得螺环的4-酰胺基
四氢吡喃。