1: H2 / 10 percent palladium/charcoal / methyl acetate 2: 1) aqueous sodium nitrite, 2) sodium azide / 1) 1N aqueous hydrochloric acid, ice cooling; 2) pH 5, 30 min 3: 75 percent / toluene / 0.5 h / Heating View Scheme

acetic acid; zinc T=-78 - 20°C; Inert atmosphere;

hydrogen; palladium on activated charcoal in methyl acetate Yield given. Yields of byproduct given. Title compound not separated from byproducts;