titanium tetrachloride in dichloromethane

1: 3,5-dimethyl-2-hydroxybenzaldehyde With potassium carbonate in N,N-dimethyl-formamide T=20°C; 0.25 h; Inert atmosphere; 2: methyl iodide in N,N-dimethyl-formamide T=20°C; 12 h; Inert atmosphere;

lead(IV) acetate; acetic acid

diethyl ether

1: aqueous H2O2; formic acid / Erwaermen des Reaktionsprodukts mit wss. NaOH 2: lead (IV)-acetate; acetic acid View Scheme