1: dicobalt octacarbonyl / CH2Cl2 / Ambient temperature 2: 1.) m-chloroperbenzoic acid, disodium hydrogen phosphate, 2.) water / 1.) CH2Cl2, RT, 22 h View Scheme

dicobalt octacarbonyl in dichloromethane Ambient temperature;

1: dicobalt octacarbonyl / CH2Cl2 / Ambient temperature 2: 52 percent / N-bromosuccinimide / CH2Cl2 / 8 h / Ambient temperature View Scheme