1.1: trifluoroacetic anhydride / tetrahydrofuran / 1 h / -78 °C
1.2: 60.33 h / -78 °C / Reflux
1.3: 2 h / 20 °C
2.1: 10 palladium on activated charcoal; hydrogen / ethanol / -78 °C / 760.05 Torr
2.2: 60.33 h / -78 °C / Reflux
2.3: 2 h / 20 °C
View Scheme
