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(a) hv ≥ 410 nm in CD3CN. (b) i. (R)-Methyl p-tolylsulfoxide in MeOH, reflux, 16 h; ii. Reverse-phase HPLC (0.1% HCO2H in MeCN/H2O). (5% over two steps for [11-A]HCO2, 4% over two steps for [11-C]HCO2).
