GRAPHICAL ABSTRACTPhosphine-phosphoramidites with 2-(diphenylphosphino)-ethylamine or N-methyl-2-(diphenylphosphino)ethylamine fragmentsAll authorsI. V. Chuchelkin, V. K. Gavrilov, K. N. Gavrilov & V. A. Milukovhttps://doi.org/10.1080/10426507.2016.1227817Published online:29 August 2016