1: 62.0 g / LiNH2 / liquid ammonia; diethyl ether / 2.5 h / -40 °C 2: 3N H2SO4 / acetone / 0.25 h / 0 °C 3: 81.3 percent / Zn, NaCN / propan-1-ol; H2O / 5 h / Ambient temperature 4: 37percent HCl / CH2Cl2 / 0.25 h / 0 °C 5: CH2Cl2 / 18 h / Ambient temperature 6: 1.)CH3ONa / 1.) CH2Cl2, CH3OH, -20 deg C, 2 h then 0 deg C, 2 h, 2.) CH3OH, reflux, 18 h 7: 1.) 1N KOH, air / 1.) pyridine, ethanol, 0 deg C, 30 min then R.T., 1.5 h, 2.) water, reflux, 48 h View Scheme

tellurium; sodium tetrahydroborate in carbon disulfide; ethanol T=40°C; 0.333333 h; Title compound not separated from byproducts;