2-Methyl-4-methoxycarbonylphenylboronic acid, pinacol ester → 4-(6,6-Dimethyl-bicyclo[3.1.1]hept-2-en-2-yl)-3-methyl-benzoic acid methyl ester

Participants

Reaction Steps

3-Methyl-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-benzoic acid methyl ester of Example 28, Step A (1.00 g, 3.62 mmol) and 6,6-dimethyl-bicyclo[3.1.1]hept-2-en-2-yl trifluoromethanesulfonate (1.17 g, 4.34 mmol) were reacted in the manner of Example 1, Step F. Purification by flash column chromatography on silica gel, eluting with a solvent gradient of from 0 to 5% ethyl acetate in hexane, afforded the title compound (0.680 g) as a light yellow oil.

Provenance & Evidence