1: 95 percent / 1.) n-butyllithium / 1.) hexane, THF, -10 deg C 2.) hexane, THF, 0 deg C, 30 min 2: NaNH2 / liquid ammonia; tetrahydrofuran / 0.5 h View Scheme

1: 95 percent / 1.) n-butyllithium / 1.) hexane, THF, -10 deg C 2.) hexane, THF, 0 deg C, 30 min 2: 1.) NaNH2 2.) H2 / 2.) P-2 nickel / 1.) liq. ammonia, THF, 30 min View Scheme