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Several classes of arylphosphorus acid amides have been tested in reactions with alkali metal solutions in liquid ammonia. The outcomes of such reactions depend on the structures of the starting materials. Generally, two processes – Birch reduction or cleavage of the P–aryl bond – can be operative. Diarylphosphinic amides tend to undergo double Birch reduction to afford bis(cyclohexadienyl)phosphinic amides.

Diastereomerically pure phenylphosphonous acid‐borane l‐menthyl ester N,N‐diethylamide was obtained through the fractional crystallization of a diastereomeric mixture of compounds synthesized from PhPCl2, l‐menthol, diethylamine, and BH3·THF. Treatment of racemic or diastereomerically pure phenylphosphonous acid‐borane derivatives with sodium in liquid ammonia followed by the addition of an electrophile led to the formation of phosphinous acid‐amides. Surprisingly, these compounds undergo preferential P–N bond cleavage under Birch reduction conditions.

Several strategies for the development of the synthesis of Pchiral organophosphorus compounds with (L)-prolinol as a source of chirality have been examined. A reaction of L-prolinol with a set of different alkyl/arylphosphonous acid diamides led in most of the cases to the quantitative formation of the appropriate bicyclic oxazaphospholidines with complete dia-stereo and enantioselectivity. The latter were reacted with BH 3 complex and the formed borane analogues were submitted to structural modifications leading to tertiary phosphine-boranes. Additionally, the effectiveness of oxazaphospholidines as ligands in transition metal asymmetric catalysis has been tested in hydrogenation of dehydroaminoacid esters and imine.

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We present the development of the method for the refitting the ReaxFF parameters for a system consisting of the mixed transition metal oxides. We have tested several methods allowing to calculate the differences between the vectors of the forces acting on atoms obtained from the reference DFT simulation and the parameters-dependent ReaxFF. We conclude that the footrule method yields the best parameters among the investigated options. We then validate the parameters using the system consisting of the hematite supported (TiO2)n clusters. The results indicate the refitted parameters allow to obtain much better geometries of the clusters upon MD simulation on the ReaxFF level, and despite the short timescale lead to the stable structures.