1: With caesium carbonate T=180°C; 0.333333 h; Microwave irradiationInert atmosphere; 2: With di-μ-chloro-bis(η4-1,5-cyclooctadiene)diiridium T=180°C; 0.666667 h; Microwave irradiationInert atmosphere;

1: ammonium acetate, pyridine / toluene / 44 h / Heating 2: H2 / 5percent Pd/C / ethanol / 9 h / 760 Torr View Scheme

in N,N-dimethyl-formamide T=60°C; 16 h; Inert atmosphere;

benzenesulfonyl chloride