trifluoroacetic anhydride

1: allyl bromide With indium; sodium iodide in N,N-dimethyl-formamide T=20°C; 2: 4-methyl-4-methoxycyclohexa-2,5-dien-1-one in N,N-dimethyl-formamide T=20°C;

1: 3-bromo-2-methylprop-1-ene With indium; sodium iodide in N,N-dimethyl-formamide T=20°C; 2: 4-methyl-4-methoxycyclohexa-2,5-dien-1-one in N,N-dimethyl-formamide T=20°C;