1: 63 percent / Zn, AcOH / pyridine / 40 deg C, 2 h, then 70 deg C, 2 h 2: 85 percent / Ba(OH)2 / methanol / 0.5 h / 0 °C View Scheme

acetic acid; zinc in pyridine 40 deg C, 2 h, then 70 deg C, 2 h;