1: 89 percent / H2, Ni(OAc)2, NaBH4 / Ambient temperature 2: 1.) MsCl, Et3N, 2.) NaI / 1.) CH2Cl2, RT, 2.) acetone, reflux 3: 99 percent / acetonitrile / Heating 4: 63 percent / n-BuLi, HMPA / tetrahydrofuran / -78 °C 5: 90 percent / n-Bu4NF*THF / acetic acid / Ambient temperature 6: MnO2 / diethyl ether / Ambient temperature View Scheme