Diastereoselective Ring-Closing Metathesis: Synthesis of P-Stereogenic Phosphinates from Prochiral Phosphinic Acid Derivatives
作者:Katherine S. Dunne、Fabrice Bisaro、Barbara Odell、Jean-Marc Paris、Véronique Gouverneur
DOI:10.1021/jo0518708
日期:2005.12.1
The preparation of phosphorus-containing trienes featuring two diastereotopic vinyl moieties followed by a diastereoselective ring-closing metathesis is described. This methodology allowed for the synthesis of novel highly functionalized P-stereogenic heterocycles featuring both an exo- and an endocyclic double bond. An investigation into the factors influencing the diastereochemical outcome of the
Organische Phosphorverbindungen 44 Darstellung und Eigenschaften von Bis-(ß-chloräthyl)-phosphinsäure-Derivaten [1]
作者:Ludwig Maier
DOI:10.1002/hlca.19710540124
日期:——
Reaction of ClCH2CH2PCl2 with ethylene oxide gives the phosphonous acid ester ClCH2CH2P (OCH2CH2Cl)2 which on heating to 120° rearranges to the phosphinic acid ester (ClCH2CH2)2P(O)OCH2CH2Cl (3). Chlorination of 3 with PCl5 in CCl4-solution yields the phosphinic chloride (ClCH2CH2)P(O)Cl (4), which on treatment with P2S5 at 170° produces the thioderivative, (ClCH2CH2)2P(S)Cl, (5). Treatment of 4 and