The cross-coupling reaction between halocarbonyl compounds with Knochel's (dialkoxyboryl)methylzinc reagent provided a new synthesis of oxoalk-2-enylboronates; the in situ cyclization of these boronates gave 3-methylene cyclopentanols or cycloheptanols in high yields.
卤代羰基化合物与 Knochel 的(二烷氧基
硼酰)甲基
锌试剂之间的交叉偶联反应提供了一种新的氧代烷基-2-烯基
硼酸酯的合成方法;这些
硼酸酯的原位环化反应能以高产率得到 3-亚甲基
环戊醇或
环庚醇。