Protected Indazole Boronic Acid Pinacolyl Esters: Facile Syntheses and Studies of Reactivities in Suzuki-Miyaura Cross-Coupling and Hydroxydeboronation Reactions
作者:Valérie Collot、François Crestey、Elodie Lohou、Silvia Stiebing、Sylvain Rault
DOI:10.1055/s-0028-1087922
日期:2009.3
and efficient synthesis for the isolation of protected indazolylboronic esters. These com- pounds were synthesized by reaction between prepared protected haloindazoles and bis(pinacolato)diboron. The effects of solvent, temperature, reaction time, and the nature of halogen atom as well as protecting group were investigated. Additionaly, these com- pounds reacted either with aryl halides in a Suzuki-Miyaura
该论文描述了一种用于分离受保护的吲唑基硼酸酯的快速有效的合成方法。这些化合物是通过制备的受保护的卤代吲唑和双(频哪醇)二硼反应合成的。考察了溶剂、温度、反应时间、卤原子性质和保护基等因素的影响。此外,这些化合物在 Suzuki-Miyaura 交叉偶联反应中与芳基卤化物反应或在羟基脱硼反应中与过氧化氢反应,显示出可能获得新的芳基和羟基吲唑库。我们小组长期以来一直对新的多功能化吲唑文库的设计和合成感兴趣,1 特别是那些源自色胺、血清素、褪黑激素或色氨酸的 2-氮杂生物电子等排体的文库。2