3-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde → HCID 86607717, compound

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Reaction Steps

Proceeding as in Reference 19, but substituting methyl-3-formyl-4-hydroxy-5-bromophenylacetate (2.47 g, 9.0 mmol) and 2-methoxymethoxy-5-fluorophenylboronic acid (2.0 g, 10.0 mmol), gave methyl 5′-fluoro-5-formyl-6-hydroxy-2′-methoxymethoxy-biphenyl-3-yl)-acetate (2.2 g, 70%) as a yellow oil which crystallized overnight Proceeding as in Reference 19, but substituting tert-butyl [3-bromo-4-(2-methoxyethoxymethoxy)-benzyl]carbamate (2.3 g, 5.9 mmol) and 2-2-methoxyethoxymethoxy)-3-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-benzaldehyde (60 mL, 0.1 M in toluene), gave tert-butyl [3′-formyl-6,2′-bis(2-methoxyethoxymethoxy)biphenyl-3-ylmethyl]carbamate (2.96 g).

Provenance & Evidence