using lithium 2,2,6,6-tetramethylpiperidide (LTMP) in combination with triisopropylborate (B(OiPr)(3)) is a highly efficient and experimentally straightforward process for the preparation of ortho substituted arylboronic esters. The mild reaction conditions allow the presence of functionalities such as ester or cyano groups or halogen substituents that are usually not compatible with the conditions used
[反应:参见正文]使用
2,2,6,6-四甲基哌啶锂(L
TMP)与
三异丙基硼酸酯(B(OiPr)(3))结合进行原位
锂化是一种高效且实验简单的制备方法取代的芳基
硼酸酯的制备。温和的反应条件允许存在官能团,例如酯或
氰基或卤素取代基,这些官能团通常与在
芳烃的定向邻位
金属化中使用的条件不兼容。芳基
硼酸酯与多种芳基卤化物进行了铃木型交叉偶联,以53-94%的收率提供了联芳基。