TCI B5704 (CAS 850264-92-5), 3,3'-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,1'-biphenyl, is a bifunctional organoboron reagent designed for Suzuki-Miyaura cross-coupling reactions, particularly in the construction of biphenyl-based conjugated polymers and porous organic frameworks. Its dual pinacol boronate ester groups at the meta positions enable stepwise or simultaneous carbon-carbon bond formation with aryl halides under palladium catalysis. This compound finds broad utility in the synthesis of COFs, MOFs, optoelectronic materials, and advanced functional polymers for research and development applications.
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