... 18. The reaction was repeated under 100 °C, 70 °C and 50 °C. In all three cases the reaction led to the ... of titanium, 29 zirconium 30 or bismuth compounds, 31 acetyl acetone in the presence of iron(III) 32 or indium compounds, 33 ethyl acetate in the presence of 1,3-dichloro-1 ...