1: 9-(3-phenylpropyl)-9-borabicyclo[3.3.1]nonane With potassium tert-butylate in 1,4-dioxane; 2-methyl-propan-1-ol T=20°C; 0.5 h; 2: cyclopentyl-bromide With N,N'-dimethylcyclohexane-1,2-diamine; [NiCl2(1,2-dimethoxyethane)] in 1,4-dioxane; 2-methyl-propan-1-ol T=20°C; Suzuki cross-coupling; 24 h; Further stages.;

copper(l) iodide; lithium tert-butylate in N,N-dimethyl-formamide T=80°C; Suzuki-Miyauri coupling; 24 h; Inert atmosphere;