1: 88 percent / H2, quinoline / Lindlar-cat. / hexane / Ambient temperature 2: 12 h / 90 °C View Scheme

1: 82 percent / CrO3 / acetone; aq. H2SO4 / 14 h / Ambient temperature 2: 88 percent / H2, quinoline / Lindlar-cat. / hexane / Ambient temperature 3: 12 h / 90 °C View Scheme

T=90°C; 24 h; Yield given. Yields of byproduct given. Title compound not separated from byproducts;