1: 95 percent / N-bromosuccinimide, benzoyl peroxide / CCl4 / 6 h / Heating 2: 81 percent / tetrahydrofuran / 13 h / Heating 3: 10percent aq. NaOH / 1.17 h / Heating View Scheme

1: 81 percent / tetrahydrofuran / 13 h / Heating 2: 10percent aq. NaOH / 1.17 h / Heating View Scheme

(i) tBuCOCl, (ii) KOtBu, (iii) HCl; Multistep reaction;

sodium hydroxide 1.16667 h; Heating;