Synthesis of Borinic Acids and Borinate Adducts UsingDiisopropylaminoborane.

In situformationof aryl Grignard under Barbiercondition and diisopropylaminoborane as boron source allows a completecontrol of the addition onto the boron electrophile. Analyticallypure borinic acid derivatives were produced at the gram scale withoutcolumn chromatography and isolated as borinates adducts, with ethanolamineor 8-hydroxyquinoline, after workup. [ABSTRACT FROM AUTHOR]