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(a) i. LiOH in acetone or K2CO3 in MeOH; ii. R′SiCl, imidazole/DMAP, CH2Cl2, rt; (b) i. Ce(NH4)2(NO3)6, aq CH3CN, −20 °C; ii. (Boc)2O, diisopropylethylamine, DMAP, CH2Cl2, rt; (c) i. HF-Py in Py, 0 °C to rt; ii. TESCl, imidazole, CH2Cl2, rt.
