Abstract
A new and general synthetic methodology for the construction of biaryl, heterobiaryl, and polyaryl molecules by the ruthenium-catalyzed cross-coupling of ortho-methoxy naphthamides with aryl boroneopentylates is described. The isomeric 1-MeO-2-naphthamides and 2-MeO-1-naphthamides furnish an expansive series of arylated naphthamides in excellent yields. Competition experiments showed the higher reactivity of 1-MeO-2-naphthamide over 2-MeO-benzamide. Orthogonality between the C-O activation/cross-coupling and the Suzuki-Miyaura reactions was established. The method provides naphthalenes which are difficult to prepare by directed ortho metalation.
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