期刊
JOURNAL OF ORGANIC CHEMISTRY
卷 86, 期 21, 页码 14493-14507出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.joc.1c01364
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资金
- New National Excellence Program of the Ministry of Human Capacities [UNKP-20-3-II-BME-282]
- National Research, Development and Innovation Office NKFIH [PD 128504, K 124544]
Secondary phosphine oxides with various aryl and alkyl groups were synthesized in racemic form and optically resolved using TADDOL derivatives. The resolution method showed good scope under optimized conditions, with successful preparation of enantiopure compounds.
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 diasteromeric 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.
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