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To Compound 1062 (1.67 g, 5.98 mmol) in a solution of methanol and ethyl acetate (40 mL, 1:1) was added palladium on carbon (1 g, 10%, Degussa type). The reaction was shaken under hydrogen atmosphere at 45 psi on a Parr apparatus for 1 hour, filtered through diatomaceous earth, and concentrated under reduced pressure. The resulting material was dissolved in acetonitrile (30 mL) and treated with N-bromosuccinimide (1.14 g, 6.4 mmol). The reaction mixture was stirred for 30 minutes at room temperature and quenched with a saturated solution of sodium sulfite. The crude product was extracted with EtOAc (2×30 mL) and the combined organics were dried over magnesium sulfate and concentrated under reduced pressure. The residue was purified via silica gel chromatography to provide 1.26 g of tert-butyl 4-(5-bromo-4-methylthiophen-2-yl)piperidine-1-carboxylate Compound 1063) as a pale yellow solid; 1H NMR (300 MHz, CDCl3): δ 6.42 (s, H), 4.20-4.01 (m, 2H), 2.77-2.68 (m, 3H), 2.05 (s, 3H), 1.84 (d, J=12.3 Hz, 2H) and 1.50-1.39 (m, 11H).

1. filtrationfiltered through diatomaceous earth
2. concentrationconcentrated under reduced pressure
3. dissolutionThe resulting material was dissolved in acetonitrile (30 mL)
4. stirringThe reaction mixture was stirred for 30 minutes at room temperature
5. customquenched with a saturated solution of sodium sulfite
6. extractionThe crude product was extracted with EtOAc (2×30 mL)
7. dry with materialthe combined organics were dried over magnesium sulfate
8. concentrationconcentrated under reduced pressure
9. customThe residue was purified via silica gel chromatography