potassium hydroxide in water; isopropyl alcohol T=45°C; 0.5 h;

With  tetrabutyl ammonium fluoride in  tetrahydrofuran T=20°C; P=11250900 Torr; 1 h;   

Multi-step reaction with 6 steps 1: 70 percent / NH4OAc / 2 h / 100 °C2: 95 percent / aluminium hydride, 100percent H2SO4 / tetrahydrofuran / 0 deg C, 20 deg C 1 h followed 30 min reflux3: 57 percent / TMSCl, Et3N, TMSI / CH2Cl2; CHCl3 4: 89 percent / Et3N / diethyl ether / 1 h / 0 - 35 °C5: 96 percent / pyridine / 12 h / 0 °C6: 55 percent / tetrabutylammonium fluoride / tetrahydrofuran / 0.5 h / Heating  

Multi-step reaction with 2 steps 1: 96 percent / pyridine / CH2Cl2 / 1.) 0 deg C, 1 h, 2.) 5 deg C, 16 h2: 43 percent / (n-Bu)4NF / tetrahydrofuran / 168 h / 20 °C / 750.06 Torr  

Multi-step reaction with 3 steps 1: 89 percent / Et3N / diethyl ether / 1 h / 0 - 35 °C2: 96 percent / pyridine / 12 h / 0 °C3: 55 percent / tetrabutylammonium fluoride / tetrahydrofuran / 0.5 h / Heating