Varga, Bence; Szemesi, Peter; Nagy, Petra; Herbay, Reka; Holczbauer, Tamas; Fogassy, Elemer; Keglevich, Gyorgy; Bagi, Peter published the artcile< Enantioseparation of P-Stereogenic Secondary Phosphine Oxides and Their Stereospecific Transformation to Various Tertiary Phosphine Oxides and a Thiophosphinate>, Computed Properties of 401-78-5, the main research area is phosphorus stereogenic secondary phosphine oxide preparation enantioseparation transformation; tertiary thiophosphinate phosphine oxide preparation; crystal mol phenylhydroxymethyl methylphenyl phosphine oxide TADDOL.
Secondary phosphine oxides incorporating various aryl and alkyl groups were synthesized in racemic form, and these products formed the library reported in this study. TADDOL derivatives were used to obtain the optical resolution of these P-stereogenic secondary phosphine oxides. The developed resolution method showed a good scope under the optimized reaction conditions, as 9 out of 14 derivatives could be prepared with an enantiomeric excess (ee) ≥ 79% and 5 of these derivatives were practically enantiopure >P(O)H compounds (ee ≥ 98%). The scalability of this resolution method was also demonstrated. Noncovalent interactions responsible for the formation of diastereomeric complexes were elucidated by single-crystal XRD measurements. (S)-(2-Methylphenyl)phenylphosphine oxide was transformed to a variety of P-stereogenic tertiary phosphine oxides and a thiophosphinate in stereospecific Michaelis-Becker, Hirao, or Pudovik reactions.
Journal of Organic Chemistry published new progress about Addition reaction (Pudovik). 401-78-5 belongs to class bromides-buliding-blocks, and the molecular formula is C7H4BrF3, Computed Properties of 401-78-5.
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary