GRAPHICAL ABSTRACTThermal stability of primary and secondary phosphine oxides formed as a reaction of phosphine oxide with ketonesAll authorsE. V. Gorbachuk, E. K. Badeeva, S. A. Katsyuba, P. O. Pavlov, Kh. R. Khayarov, O. G. Sinyashin & D. G. Yakhvarovhttps://doi.org/10.1080/10426507.2016.1212047Published online:25 July 2016