potassium tert-butylate in tetrahydrofuran 2 h; Ambient temperature;

1: 96 percent / ethyldiisopropylamine / tetrahydrofuran / 1 h / Ambient temperature 2: 87 percent / sodium amide / liquid ammonia 3: 83 percent / potassium tert-butoxide / tetrahydrofuran / 2 h / Ambient temperature View Scheme

1: 87 percent / sodium amide / liquid ammonia 2: 83 percent / potassium tert-butoxide / tetrahydrofuran / 2 h / Ambient temperature View Scheme