Abstract
We report a concise synthesis of 1,8-diaminonaphthalene-protected diboronic acid (B2(dan)2), which is a promising borylating agent. B2(dan)2 is a bench-stable compound, and it could be utilized for Cu-catalyzed borylation of styrene derivatives. The reaction proceeded in a highly selective manner, and the products were isolated in up to 97% yields. Mechanistic studies revealed that a borate species would be a key intermediate for the borylation reaction.
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