作者:Hiroto Yoshida、Yuya Murashige、Itaru Osaka
DOI:10.1002/adsc.201900342
日期:2019.5.14
γ‐Selective B(dan)‐installing allylic borylation was found to proceed efficaciously by the reaction of an unsymmetrical diboron, (pin)B−B(dan), with allylic phosphates under copper catalysis. The resulting allyl−B(dan) was convertible into 1,3‐, 1,2‐, or 1,1‐diborylalkanes with different boron‐Lewis acidity by B(pin)‐installing hydroboration, and its C(sp3)−B(dan) bond turned out to be preferentially
发现通过铜催化下不对称的二硼化硼(pin)B-B(dan)与烯丙基磷酸酯的反应,可以有效地进行γ-选择性B(dan)-烯丙基硼化反应的进行。生成的烯丙基-B(dan)可通过B(pin)-安装硼氢化反应转化为具有不同硼-路易斯酸度的1,3-,1,2-或1,1-二硼烷基烷烃,及其C(sp 3)-事实证明,B(dan)键优先转换为C(sp 3)-N键,而B(pin)完整无缺,尽管它对各种转换均具有惰性。