1: 83 percent / H2 / 5percent Pd/C / methanol / 24 h / Ambient temperature 2: 11 percent / p-TsOH / tetrahydrofuran; H2O / 5 h / 50 °C View Scheme

hydrogen; palladium on activated charcoal in methanol Yield given. Yields of byproduct given. Title compound not separated from byproducts;