1: 97 percent / H2 / 10percent Pd-C / ethyl acetate 2: 50 percent / 100 °C / 20 Torr 3: 30 percent / light petroleum / 69 h / 160 - 170 °C / 4-t-butylpyrocatechol View Scheme

1: 97 percent / H2 / 10percent Pd-C / ethyl acetate 2: 50 percent / 100 °C / 20 Torr 3: 14 percent / light petroleum / 69 h / 160 - 170 °C / 4-t-butylpyrocatechol View Scheme

1: 97 percent / H2 / 10percent Pd-C / ethyl acetate 2: 50 percent / 100 °C / 20 Torr 3: 14 percent / light petroleum / 69 h / 160 - 170 °C / 4-t-butylpyrocatechol View Scheme

1: 97 percent / H2 / 10percent Pd-C / ethyl acetate 2: 50 percent / 100 °C / 20 Torr View Scheme