Insertion Reactions and Catalytic Hydrophosphination of Heterocumulenes using α-Metalated <i>N</i>,<i>N</i>-Dimethylbenzylamine Rare-Earth-Metal Complexes
作者:Andrew C. Behrle、Joseph A. R. Schmidt
DOI:10.1021/om300807k
日期:2013.3.11
dimethylbenzylamine) was probed through a series of stoichiometric insertion and catalytic hydrophosphination reactions. Both rare-earth-metal species inserted 3 equiv of various carbodiimides to form the corresponding homoleptic amidinates. α-La(DMBA)3 was also found to be a useful precatalyst for the room-temperature hydrophosphination of heterocumulenes to form phosphaguanidines, phosphaureas, and phosphathioureas
Reactions of isocyanates with primary and secondary phosphines without solvent at room temperature afforded the corresponding phosphinecarboxamide (RN(H)COPR'2) in excellent yields. This reaction system is applicable for isothiocyanates. The compounds newly obtained were fully characterized using multielement NMR spectroscopy. In addition, the molecular structure of Cl(CH2)2N(H)COPPh2 was studied by
The reaction of Fe([small eta]-C5H4NHC(O)PPh2)2 (L) with PtX2(PPh3)2 selectively formed cage-shaped complexes formulated as [(PtX)4(L)6]X4∙CHCl3 (X = Cl, Br), in which the four square-planar Pt fragments were situated at each vertex...
Iron(II)-Catalyzed Hydrophosphination of Isocyanates
作者:Helen R. Sharpe、Ana M. Geer、William Lewis、Alexander J. Blake、Deborah L. Kays
DOI:10.1002/anie.201701051
日期:2017.4.18
The first transition metal catalyzed hydrophosphination of isocyanates is presented. The use of low‐coordinate iron(II) precatalysts leads to an unprecedented catalytic double insertion of isocyanates into the P−H bond of diphenylphosphine to yield phosphinodicarboxamides [Ph2PC(=O)N(R)C(=O)N(H)R], a new family of derivatized organophosphorus compounds. This remarkable result can be attributed to the
Molybdenum- and tungsten-cyclopentadienyl carbonyl complexes with hetero-allyl derivatives as ligand
作者:H.P.M.M. Ambrosius、A.H.I.M. Van Der Linden、J.J. Steggerda
DOI:10.1016/s0022-328x(00)84587-8
日期:1981.1
p-tol) behave as neutral monodentate (LH) ligands in substitution reactions with M(CO)3(η5-C5H5)Cl (M = Mo, W), forming M(CO)2(η5-C5H5)Cl(LH) with P bonded to the metal atom. Deprotonation under the influence of the base Et3N occurs only in the case of X = S and the chelate complexes M(CO)2(η5-C5H5)(L−) are formed with coordination via P and S. The related ligand Me2NC(S)N(H)R (R = Me, Ph) reacts in the