potassium hydroxide in water 20 h; Ambient temperature; Yield given;

With  pyridine; trimethylsilyl iodide in  chloroform-d1 T=55°C; 5 h;   

Multi-step reaction with 12 steps 1: 60 percent / MeSO2Cl, LiCl, s-collidine / dimethylformamide / 2 h / 0 °C2: 70 percent / n-BuLi / tetrahydrofuran; dimethylsulfoxide / 16 h / 20 °C3: 95 percent / pyridinium toluene-p-sulphonate / methanol / 8 h / 60 °C4: 42 percent / 2-chloro-1-methylpyridinium iodide / acetonitrile / 18 h / 80 °C5: LDA / tetrahydrofuran / -100 - 20 °C6: K2CO3, MeOH, H2O / 2 h / 20 °C7: (COCl2), DMF / diethyl ether / 2 h / 0 - 20 °C8: diethyl ether / 16 h / 0 - 20 °C9: Et3N / PhCO2Ag / 16 h / 20 °C10: 90 percent / 40 percent aq. HF / tetrahydrofuran / 6 h / 20 °C11: 62 percent / CrO3 in H2SO4 12: Me3SiI, C5H5N / CHCl3 / 5 h / 60 °C  

Multi-step reaction with 11 steps 1: 70 percent / n-BuLi / tetrahydrofuran; dimethylsulfoxide / 16 h / 20 °C2: 95 percent / pyridinium toluene-p-sulphonate / methanol / 8 h / 60 °C3: 42 percent / 2-chloro-1-methylpyridinium iodide / acetonitrile / 18 h / 80 °C4: LDA / tetrahydrofuran / -100 - 20 °C5: K2CO3, MeOH, H2O / 2 h / 20 °C6: (COCl2), DMF / diethyl ether / 2 h / 0 - 20 °C7: diethyl ether / 16 h / 0 - 20 °C8: Et3N / PhCO2Ag / 16 h / 20 °C9: 90 percent / 40 percent aq. HF / tetrahydrofuran / 6 h / 20 °C10: 62 percent / CrO3 in H2SO4 11: Me3SiI, C5H5N / CHCl3 / 5 h / 60 °C