1498-56-2Relevant articles and documents
Synthesis, characterization, and structures of zinc(II) and cadmium(II) complexes with phosphoramides bearing cyclic amino groups
M’haiham, Mohamed,Ebeid, Khaled,Ebnou, Fatimetou,Carpenter-Warren, Cameron L.,Slawin, Alexandra M. Z.,Woollins, John Derek,Ben Dhia, Med Taieb,Sanhoury, Med Abderrahmane K.
, p. 453 - 466 (2020)
Twelve new zinc(II) and cadmium(II) complexes with symmetric ligands, [MCl2((R2N)3PO)2] (M = Zn, R2N = pyrrolidinyl (1), piperidinyl (2); M = Cd, R2N = pyrrolidinyl (3), piperidinyl (4)), and differently substituted ligands of the general formula [MCl2(R2N)PO(R’2N)2] (M = Zn or Cd; R2N = Pyrr, Pip or Mor; R’2N = Pyrr, Pip or Mor (5–12) have been synthesized from reaction of zinc(II) or cadmium(II) chlorides with the ligands, giving yields of 43–76%. The complexes were characterized with multinuclear (1H, 13C and 31P) NMR, conductivity, IR spectroscopy, and X-ray analyses. Complexes 1, 3, 11, and 12 are comprised of two ligands coordinated to the metal center in a distorted monomeric tetrahedral arrangement. The P = O bond lengths of 1.490(3) (1), 1.497(4) (3), 1.480(4) (11), and 1.479(5) ? (12) are in the order observed for analogous phosphoramide complexes. The results are compared with those reported for related chalcogen counterparts.
Synthesis of P-chiral enephosphonic acid derivatives
Grison, Claude,Comoy, Corinne,Chatenet, David,Coutrot, Philippe
, p. 83 - 97 (2007/10/03)
An efficient and convenient synthesis of chiral enephosphonic acid derivatives (enephosphonates, enephosphonamides, enephosphinates) was reported by a two-step procedure involving alkylidenediphosphorylation of nucleophiles followed by a Horner-Emmons olefination. Depending on the selected strategy, the synthesis could be executed according to a one-pot or a twostep reaction sequence. Regioselectivity of Horner-Emmons reaction and 31P-NMR study of diphosphorylated anions were described.
