1: 98 percent Spectr. / HTIB / CDCl3 / Ambient temperature 2: CH2Cl2 3: 93 percent / CH2Cl2 / 2 h 4: 86 percent / 2-t-butyl-1,1,3,3-tetramethyl guanidine / ethanol / 1 h / Ambient temperature View Scheme

(hydroxy(tosyloxy)iodo)benzene in chloroform-d1 Ambient temperature;

1: 98 percent Spectr. / HTIB / CDCl3 / Ambient temperature 2: 93 percent / CH2Cl2 View Scheme

in dichloromethane T=70°C;