A General Method for meta- and para-Functionalization of

General All reactions were carried out under an argon atmosphere in flame-dried glassware. Syringes which were used to transfer anhydrous solvents or reagents were purged with argon prior to use. THF was continuously refluxed and freshly distilled from sodium benzophenone ketyl under nitrogen. Yields refer to isolated yields of compounds estimated to be>95 % pure as determined by 1H-NMR (25 °C) and capillary GC. Column chromatography was performed using SiO2 (0.040 – 0.063 mm, 230 – 400 mesh ASTM) from Merck. Preparation of the reagent TMP2Mg·2LiCl (2) from TMPMgCl·LiCl (1): In an argon flushed Schlenk-flask, 2,2,6,6-tetramethylpiperidine (TMPH, 5.07 mL, 30.0 mmol) was dissolved in THF (30 mL). This solution was cooled to –40 °C and n-BuLi (2.4 M in hexane, 12.5 mL, 30.0 mmol) was added dropwise. After the addition was complete, the reaction mixture wa