2-(2-Fluoro-4-methylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane → (2S)-2-tert-butoxy-2-[4-(2-fluoro-4-methyl-phenyl)-2-methyl-5,6,7,8-tetrahydrobenzothiopheno[2,3-b]pyridin-3-yl]acetic acid

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The title compound was prepared from Methyl (2S)-tert-butoxy(4-iodo-2-methyl-5,6,7,8-tetrahydro[1]benzothieno[2,3-b]pyridin-3-yl)acetate (Preparation 16, 100 mg, 212 μmol) and 2-(2-fluoro-4-methylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (Preparation 19, 99 mg, 424 μmol) using the same method as described in Example 44, Step 1 to yield 100 mg, 96%. Material obtained was a mixture of atropisomers, in a 2:1 ratio.

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