196212-27-8

Density：1.03g/cm3

Boiling Point：430.9ºC at 760 mmHg

Flash Point：214.4ºC

Refractive Index：1.49

Vapor Pressure：3.15E-07mmHg at 25°C

1,3-phenyldiboronic acid, bis(pinacol) ester is an organoboron compound and a useful reagent in organic synthesis. It is a colorless liquid with a mild odor and a melting point of -50°C. It is soluble in many organic solvents and can be used in a variety of reactions, including Suzuki, Stille, and Heck reactions.

1,3-phenyldiboronic acid, bis(pinacol) ester is synthesized from 1,3-diboronic acid and bis(pinacol) ester in a three-step reaction. First, 1,3-diboronic acid is treated with a base to form the 1,3-phenylboronic acid. Then the 1,3-phenylboronic acid is reacted with bis(pinacol) ester to form the 1,3-phenyldiboronic acid, bis(pinacol) ester. Finally, the reaction mixture is filtered and the product is purified by column chromatography.

1,3-phenyldiboronic acid, bis(pinacol) ester is a useful reagent in organic synthesis. It can be used in Suzuki, Stille, and Heck reactions. In Suzuki reactions, 1,3-phenyldiboronic acid, bis(pinacol) ester reacts with aryl or alkenyl halides to form aryl or alkenyl boronic esters in the presence of a palladium catalyst. In Stille reactions, 1,3-phenyldiboronic acid, bis(pinacol) ester reacts with an organostannane to form a vinyl stannane in the presence of a palladium catalyst. In Heck reactions, 1,3-phenyldiboronic acid, bis(pinacol) ester reacts with an alkenyl halide to form an alkenyl boronic ester in the presence of a palladium catalyst.

1,3-phenyldiboronic acid, bis(pinacol) ester is also useful in the synthesis of polymethylsiloxanes. It can be reacted with polymethylsiloxanes in the presence of a platinum catalyst to form polymethylsiloxane-boronic esters. These polymethylsiloxane-boronic esters can then be used in the synthesis of polymethylsiloxanes with different functional groups.

1,3-phenyldiboronic acid, bis(pinacol) ester is a versatile reagent in organic synthesis and can be used in a variety of reactions. It is relatively stable and can be stored at room temperature for up to one year. It is supplied in a variety of forms, including solution in organic solvents and as a solid.