1: With 2,2,2-trimethylacetic acid T=110°C; Claisen rearrangement; 3 h; 2: With hydrogen; palladium on activated charcoal in cyclohexane T=0°C; P=760 Torr; 18 h;

1: With 2,2,2-trimethylacetic acid T=110°C; Claisen rearrangement; 3 h; 2: With [RuH(η5-C8H11)2]BF4 T=120°C; 6 h;