1: With n-butyllithium; N-ethyl-N,N-diisopropylamine; lithium diisopropyl amide in tetrahydrofuran T=-78 - 0°C; 2 h; 2: With hydrogenchloride in tetrahydrofuran T=0°C;

1: potassium carbonate / N,N-dimethyl-formamide / 2 h / 20 °C 2: 4,4'-di-tert-butyl-2,2'-dipyridyl / bis(η4-1,5-cyclooctadiene)-di-μ-methoxy-diiridium(I) / n-heptane / 18 h / Reflux View Scheme

potassium carbonate in N,N-dimethyl-formamide T=20°C; 2 h;