1: 76 percent / NaBH4 / ethanol / 2 h / -5 °C 2: 82 percent / K2CO3, NaI / dimethylformamide / 1.5 h / 100 °C / var.: THF, LDA, -70 deg C 3: 80 percent / DCC, DMSO, pyridine, TFA / benzene / 1) 0 deg C 2) RT, 24 h View Scheme
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