zeolite Beta in dichloromethane Heating;

1: acryloyl chloride With 1-butyl-5-hydroxymethyl-3-methyl-3H-imidazol-1-ium NTf2; triethylamine; 3-butyl-5-hydroxymethyl-1-methyl-3H-imidazol-1-ium triflimide in dichloromethane T=-20°C; 0.5 h; 2: isoprene With hydroquinone T=120°C; Diels-Alder reaction; 12 h; 3: methanol With potassium cyanide 12 h;

1: MCPBA / CH2Cl2 / 6 h / 0 °C 2: 6percent Na(Hg), disodium phosphate / methanol / 48 h / 25 °C View Scheme

1: chromic oxidation 2: HCl View Scheme

hydrogenchloride

2,2'-azo-bisisobutyronitrile; n-Bu4SnH Yield given. Multistep reaction. Yields of byproduct given;

sulfuric acid