Publications of Ross A. Widenhoefer

Book Reviews

  1. R.A. Widenhoefer, "Homogenous Catalysis: Understanding the Art", J. Am. Chem. Soc., 2005, 127, 9309-9310.

Journal Articles

  1. Han, X.; Widenhoefer, R. A., "Palladium-Mediated Cyclization of 6-Methyl-1-phenyl-6-hepten-2-one to form 3-Benzyltoluene: Carbonyl Activation by a Neutral Palladium(II) Complex", Organometallics, 2008(26), 4061-4065.
  2. Kinder, R. E.; Zhang, Z.; Widenhoefer, R. A., "Intermolecular Hydroamination of Allenes with N-Unsubstituted Carbamates Catalyzed by a Gold(I) N-Heterocyclic Carbene Complex", Org. Lett., 2008(10), 3157-3159.
  3. Widenhoefer, R. A., "Recent Developments in Enantioselective Gold(I) Catalysis", Chem. Eur. J., 2008(14), 5382-5391 (Invited Concept Article.).
  4. Bender, C. F.; Widenhoefer, R. A., "Gold(I)-Catalyzed Intramolecular Hydroamination of Unactivated C=C Bonds with Alkyl Ammonium Salts", Chem. Commun., 2008, 2741-2743.
  5. Bender, C. F.; Hudson, W. B.; Widenhoefer, R. A., "Sterically Hindered Mono(phosphines) as Supporting Ligands for the Platinum-Catalyzed Hydroamination of Amino Alkenes", Organometallics, 2008(27), 2356-2358.
  6. Zhang, Z.; Widenhoefer, R. A., "Regio- and Stereoselective Synthesis of Alkyl Allylic Ethers via Gold(I)-Catalyzed Intermolecular Hydroalkoxylation of Allenes with Alcohols", Org. Lett., 2008(10), 2079-2081.
  7. Zhang, Z.; Bender, C. F.; Widenhoefer, R. A., "Gold(I)-Catalyzed Dynamic Kinetic Enantioselective Intramolecular Hydroamination of Allenes", J. Am. Chem. Soc., 2007(129), 14148-14149.
  8. Liu, C.; Bender, C. F.; Han, X.; Widenhoefer, R. A., "Platinum-Catalyzed Hydrofunctionalization of Unactivated Alkenes with Carbon, Nitrogen, and Oxygen Nucleophiles", Chem. Commun., 2007, 3607-3618 (Invited Feature Article.).
  9. Zhang, Z.; Bender, C. F.; Widenhoefer, R. A., "Gold(I)-Catalyzed Enantioselective Hydroamination of N-Allenyl Carbamates,", Org. Lett., 2007(9), 2887-2889.
  10. Liu, C.; Widenhoefer, R. A., "Gold(I)-Catalyzed Intramolecular Enantioselective Hydroarylation of Allenes with Indoles", Org. Lett., 2007(9), 1935-1938.
  11. Zhang, Z.; Widenhoefer, R. A., "Gold(I)-Catalyzed Intramolecular Asymmetric Hydroalkoxylation of Allenes", Angew. Chem., 2007(119), 287-289.
  12. Zhang, Z.; Widenhoefer, R. A., "Gold(I)-Catalyzed Intramolecular Asymmetric Hydroalkoxylation of Allenes", Angew. Chem. Int. Ed., 2007(46), 283-285.
  13. Qian, H.; Widenhoefer, R.A., "Platinum-Catalyzed Intermolecular Hydroamination of Vinyl Arenes with Carboxamides", Org. Lett., 2005, 7, 2635-2638.
  14. Bender, C.F.; Widenhoefer, R.A., "Platinum-Catalyzed Intramolecular Hydroamination of Unactivated Olefins with Secondary Alkyamines", J. Am. Chem. Soc., 2005, 127, 1070-1071.
  15. Qian, H.; Pei, T.; Widenhoefer, R.A, "Development, Scope, and Mechanism of the Palladium-Catalyzed Intramolecular Hydroalkylation of 3-Butenyl -b-Diketones", Organometallics, 2005, 24, 287-301.
  16. Liu, C.; Widenhoefer, R.A., "Platinum (II)/Europium (III)-Catalyzed Intramolecular Hydroalkylation of 4-Pentenyl b-Dicarbonyl Compounds", Tetrahedron Lett., 2005, 46, 285-287 (Invited Contribution.).
  17. Liu, C.; Widenhoefer, R. A, "Palladium-Catalyzed Cyclization/Carboalkoxylation of Alkenyl Indoles,", J. Am. Chem. Soc., 2004, 126, 10246-10247.
  18. Wang, X.; Widenhoefer, R. A., "Platinum(II)-Catalyzed Intermolecular Hydroamination of Unactivated Olefins with Carboxamides,", Organometallics, 2004, 23, 1649-1651.
  19. Widenhoefer, R.A., "Palladium-Catalyzed Alkylation of Unactivated Olefins", Pure & Appl. Chem, 2004, 76, 671-678.
  20. Han, X.; Widenhoefer, R.A., "Palladium-Catalyzed Oxidative Alkoxylation of α-Alkenyl β-Diketones to form Functionalized Furans", J. Org. Chem, 2004, 68, 1738-1740.
  21. Liu, C.; Han, X.; Wang, X.; Widenhoefer, R.A., "Platinum(II)-Catalyzed Intramolecular Alkylation of Indoles wth Unactivated Olefins", J. Am. Chem. Soc., 2004, 126, 3700-3701.
  22. Perch, N. S.; Widenhoefer, R. A., "Mechanism of Palladium-Catalyzed Diene Cyclization/Hydrosilylation: Direct Observation of Intramolecular Carbometallation", J. Am. Chem. Soc, 2004, 126, 6332-6346.
  23. Wang, X.; Widenhoefer, R. A, "Palladium(II)- and Platinum(II)-Catalyzed Addition of Stabilized Carbon Nucleophiles to Ethylene and Propylene", Chem. Commun., 2004, 660 - 661.
  24. Qian, H.; Han, X.; Widenhoefer, R. A., "Platinum-Catalyzed Hydroalkoxylation of g- and d-Hydroxy Olefins to form Cyclic Ethers", J. Am. Chem. Soc, 2004, 126, 9536-9537.
  25. Liu, C; Wang, X; Pei, T.; Widenhoefer, R.A., ""Palladium-Catalyzed Intramolecular Oxidative Alkylation of 4-Pentenyl β-Dicarbonyl Compounds"", Chem. Eur J., 2004, 10, 6343-6353.
  26. Han, X; Wang, X.; Pei, T.; Widenhoefer, R.A., ""Palladium-Catalyzed Intramolecular Hydroalkylation of Alkenyl - β - Keto Esters, -Aryl Ketones, and Alkyl Ketones in the presence of Me3SiCl or HCI"", Chem. Eur J., 2004, 10, 6332-6342.
  27. Pei, T.; Wang, X.; Widenhoefer, R. A, "Palladium-Catalyzed Intramolecular Oxidative Alkylation of Unactivated Olefins", J. Am. Chem. Soc., 2003, 125, 648-649.
  28. Qian, H.; Widenhoefer, R. A, "Mechanism of the Palladium-Catalyzed Intramolecular Hydroalkylation of 7-Octene-2,4-dione", J. Am. Chem. Soc, 2003, 125, 2056-2057.
  29. Goj, L.A.; Cisneros, A.G.; Yang, W.; Widenhoefer, R.A., "Dramatic Effect of Homoallylic Substitution on the Rate of Palladium-Catalyzed Diene Cycloisomerization", J. Organomet. Chem., 2003, 687, 498-507.
  30. Wang, X.; Pei, T.; Han, X.; Widenhoefer, R.A., "Palladium-Catalyzed Intramolecular Hydroalkylation of Unactivated Olefins with Dialkyl Ketones", Org. Lett., 2003, 5, 2699-2701.
  31. Qian, H.; Widenhoefer, R.A., "Mechanism of the Palladium-Catalyzed Intramolecular Hydoralkylation of 7-Octene-2,4-dione", J. Am. Chem. Soc., 2003, 125, 2056-2057.
  32. Chakrapani, H.; Liu, C.; Widenhoefer, R.A., "Enantioselective Cyclization/Hydrosilylation of 1,6-Enynes Catalyzed by a Cationic Rhodium Complex", Org. Lett., 2003, 5, 157-159.
  33. R.A. Widenhoefer, "Synthetic and Mechanistic Studies of the Cycloisomerization and Cyclization/Hydrosilylation of Functionalized Dienes Catalyzed by Cationic Palladium Complexes", Acc. Chem. Res.November,, 2002, 35, 905-913.
  34. Liu, C.; Widenhoefer, R. A, "Cyclization/Hydrosilylation of Functionalized Diynes Catalyzed by a Cationic Rhodium Bis(phosphine) Complex", OrganometallicsOctober,, 2002, 21, 5666-5673.
  35. T. Pei and R. A. Widenhoefer, "Palladium-Catalyzed Cyclization of Alkenyl b-Keto Esters in the Presence of Chlorotrimethylsilane", Chem. Commun.August,, 2002, 650-651.
  36. Wang, X.; Chakrapani, H.; Madine, J. W.; Keyerleber, M. A.; Widenhoefer, R. A., "Cyclization/Hydrosilylation of Functionalized Diynes Catalyzed by Cationic Platinum Complexes Containing Bidentate Nitrogen Ligands", J. Org. Chem, 2002, 67, 2778-2788.
  37. Wang, X.; Stankovich, S. Z.; Widenhoefer, R. A, "Palladium-Catalyzed Ring-Opening Cyclization/Hydrosilylation of 1-Cyclopropyl-1,6-Hexadienes to form (E)-1-Butenyl Cyclopentanes", Organometallics, 2002, 21, 901-905.
  38. J. W. Madine, X. Wang, and R. A. Widenhoefer, "Cyclization/Hydrosilylation of Functionalized Diynes Catalyzed by a Cationic Platinum Phenanthroline Complex", Org. Lett., 2001, 3, 385–389.
  39. P. Kisanga, L. A. Goj, and R. A. Widenhoefer, "Cycloisomerization of Functionalized 1,5- and 1,6-Dienes Catalyzed by Cationic Palladium Phenanthroline Complexes", J. Org. Chem., 2001, 66, 635–637.
  40. N. S. Perch and R. A. Widenhoefer, "Direct Observation of the Conversion of a Palladium 5-Hexenyl Chelate Complex to a Palladium Cyclopentylmethyl Complex", Organometallic, 2001, 20, , 5251-5253.
  41. L. A. Goj and R. A. Widenhoefer, "Mechanistic Studies of the Cycloisomerization of Dimethyl Diallylmalonate Catalyzed by a Cationic Palladium Phenanthroline Complex", J. Am. Chem. Soc., 2001, 123, 11133-11147.
  42. Pei, T.; Widenhoefer, R. A, "Palladium-Catalyzed Asymmetric Diene Cyclization/Hydrosilylation Employing Functionalized Silanes and Disiloxanes", , J. Org. Chem., 2001, 66, 7639-7645.
  43. T. Pei and R. A. Widenhoefer, "Palladium-Catalyzed Intramolecular Addition of 1,3-Diones to Unactivated Olefins", J. Am. Chem. Soc., 2001, 123, 11290-11291.
  44. X. Wang, H. Chakrapani, C. N. Stengone, and R. A. Widenhoefer, "Synthesis of Carbobicyclic Compounds via Palladium–Catalyzed Cyclization/Hydrosilylation: Evidence for Reversible Silylpalladation", J. Org. Chem., 2001, 66, 1755–1760.
  45. T. Pei and R. A. Widenhoefer, "Asymmetric Diene Cyclization/Hydrosilylation/Oxidation Employing 1-tert-Butyl-3,3-dimethyl-1,1-diphenyldisiloxane", Tetrahedron Lett., 2000, 41, 7597–7600.
  46. P. Kisanga and R. A. Widenhoefer, "Development, Synthetic Scope, and Mechanistic Studies of the Palladium-Catalyzed Cycloisomerization of Functionalized 1,6-Dienes in the Presence of Silane", J. Am. Chem. Soc., 2000, 122, 10017–100126.
  47. N. S. Perch, T. Pei, and R. A. Widenhoefer, "Enantioselective Diene Cyclization/Hydrosilylation Catalyzed by Optically Pure Palladium Bisoxazoline and Pyridine–Oxazoline Complexes", J. Org. Chem., 2000, 65, 3836–3845.
  48. N. S. Perch, P. Kisanga, and R. A.Widenhoefer, "Reductive Cyclization of Dimethyl Diallylmalonate Catalyzed by Palladium–Bisoxazoline Complexes in the Presence of Silane and Water", Organometallic, 2000, 19, 2541–2545.
  49. T. Pei and R. A. Widenhoefer, "Use of Pentamethyldisiloxane in the Palladium-Catalyzed Cyclization/Hydrosilylation of Functionalized Dienes", Org. Lett., 2000, 2, 1469–1471.
  50. Widenhoefer, R.A.; Stengone, C.N., "Cyclization/Hydrosilylation of Functionalized 1,6-Dienes Catalyzed by a Cationic Palladium Phenanthroline Complex", J. Org. Chem., 1999, 64, 8681-8692.
  51. Widenhoefer, R.A.; Vadehre, A.; Cheruvu, P.K., "Cyclization Hydrogermylation of Functionalized 1,6-Dienes Catalyzed by a Cationic Palladium Phenanthroline Complex", Organometallics, 1999, 18, 4614-4618.
  52. Widenhoefer, R.A.; Vadehre, A., "An Improved Catalyst for the Cyclization/Hydrosilylation of Functionalized 1,6-Dienes Employing Dimethylphenysilane", Tetrahedron Lett., 1999, 40, 8499-8502.
  53. Widenhoefer, R.A.; Perch, N.S., "Silane Promoted Cycloisomerization of Functionalized 1,6-Dienes Catalyzed by a Cationic (n-Allyl)Palladium Complex", Org. Lett., 1999, 1, 1103-1105.
  54. Perch, N.S.; Widenhoefer, R.A., "Asymmetric Cyclization/Hydrosilylation of Functionalized Dienes Catalyzed by Enantiomerically Pure Palladium Pyridine-Oxazoline Complexes", J. Am. Chem. Soc., 1999, 121, 6960-6961.
  55. Stengone, C.N.; Widenhoefer, R.a., "Cyclization/Hydrosilylation of Functionalized 1,7-Dienes to Form Substituted Six-Membered Carbocycles", Tetrahedron Lett., 1999, 40, 1451-1454.
  56. Widenhoefer, R.A.; Krzyzanowksa, B.K.; Webb-Wood, G., "Palladium-Catalyzed Intramolecular Hydrosilylation of Alkenylsilanes: High Selectivity for the Formation of Six-Membered Silicon Heterocycles", Organometallics, 1998, 17, 5124-5127.
  57. Widenhoefer, R.A.; DeCarli, M.A., "Tandem Cyclization/Hydrosilylation of Functionalized 1,6-Dienes Catalyzed by a Cationic Palladium Complex", J. Am. Chem. Soc., 1998, 120, 3805-3806.
  58. Widenhoefer, R.A.; Buchwald, S.L., "Electronic Dependence of C-O Reductive Elimination from Palladium(Aryl)Neopentoxide Complexes", J. Am. Chem. Soc., 1998, 120, 6504.
  59. Widenhoefer, R.A.; Zhong, H.A.; Buchwald, S.L., "Direct Observation of C-O Reductive Elimination From Palladium(ArylAlkoxide Complexes to Form Aryl Ethers", J. Am. Chem. Soc., 1997, 119, 6787.
  60. Widenhoefer, R.A.; Zhong, H., "Kinetics and Mechanisms of the Formation of Palladium Bis(benzylamine) Complexes from Reaction of Benzylamine with Palladium Tri-ortho-tolylphosphine-Mono(Amine) Complexes", Inorg. Chem., 1997, 36, 2610-2616.
  61. Widenhoefer, T.A.; Zhong, H.A.; Bushwald, S.L., "Synthesis and Solution Structure of Palladium Tri(ortho-tolyl)phosphine Mono(amine) Complexes", Organometallics, 1996, 15, 2745.
  62. Widenhoefer, R.A.; Buchwald, S.L., "Halide and Amine Influence in the Equilibrium Formation of Palladium Tri(ortho-tolyl)phosphine Mono(amine) Complexes From Palladium Aryl Halide Dimers", Organometallics, 1996, 15, 2755.
  63. Widenhoefer, R.A.; Bushwald, S.L., "The Formation of Palladium Bis(amine) Complexes from Reaction to Amine with Palladium Tri(ortho-tolyl)phosphine Mono(Amine) Complexes", Organometallics, 1996, 15, 3534.
  64. Widenhoefer, R.A.; Hayashi, R.K., "The Reactions of Cp*3Co3(μ2-H)3(μ3-H) with Carbon Dioxide, Carbon Disulfide and Phenyl isocyate", Inorg. Chem., 1995, 34, 1138.
  65. Casey, C.P.; Widenhoefer, R.A.; Hallenbeck, S.L.; Widenhoefer, R.A., "Kinetics and Mechamism of the Formation of the Bis(ethylidyne) Tricobalt Cluster Cp*3Co3(μ3-CCH3)2 from Reaction of Acetylene with Cp*3Co3(μ2-H)3(μ3-H)", J. Am. Chem. Soc., 1995, 117, 4607.
  66. Casey, C.P.; Widenhoefer, R.A.; Hayashi, R.K., "The Reaction of Cp*3Co3(μ3-CCH3)(μ3-H) with (Trimethylsilyl)diazomethane and Ethyl Diazoacetate: Facile Hydrogen Transfer Forms the Diazenide Clusters Cp*3Co3(μ3-CCJ3)(μ3-NNCH2CO2CH2CH3)", Inorg. Chem., 1995, 34, 2258.
  67. Casey, C.P.; Widenhoefer, R.A.; Hallenbeck, S.L.; Hayashi, R.K.; Gavney, J.A., "Synthesis, X-ray Crystal Structures and Fluxional Behavior of the Tricobalt Clusters Cp*3C03(μ3-CO)(μ2-CO)(μ-H)2, Cp*3Co3(μ2-H)(μ3-η2-HC=NCMe2CH2Me)", Organometallics, 1994, 13, 4720.
  68. Casey, C.P.; Widenhoefer, R.A., S.L. Hallenbeck, R.K. Hayashi, D.R. Powell and G.W. Smith, "Xpray Crystal Structures of two Ethylidyne Tricobalt Clusters: Thermolysis of cp*Co(H2C=CH2)2 Froms Cp*3Co3(μ3-CCH3)(μ3-H), not Cp*3Co3(μ3-CCH3)2", Organometallics, 1994, 13, 1521.
  69. Casey, C.P.; Widenhoefer, R.A.; Hallenbeck, S.L.; Hayashi,R.K., "Synthesis and X-ray Crystal Structures of the Tricoblat Mono(ethylidyne) Clusters Cp*3Co3(μ3-CCH3)(μ3-CO)(μ2-H), Cp*3Co3(μ3-CCH3)(μ3-CO)(μ2-H), Cp*3Co3(μ3-CCH3)(μ3-CNCMe3)(μ2-H), and Cp*3Co3(μ3-CCH3)(μ3NO)", Inorg. Chem., 1994, 33, 2639.
  70. Casey, C.P.; Widenhoefer, R.A.; Hayashi, R.K., "Reaction of NO with Cp*3Co3(μ-H)4 Preserves the Tricobalt Cluster and Produces Cp*3Co3(μ3-NO)2", Inorg. Chim. Acts, 1993, 212, 81.
  71. Casey, C.; Widenhoefer, R.; Hallenbeck, S., "Conversion of Acetylene to a Triple Bridged Ethylidyne Ligand on the Cluster Cp*3Co3(μ2-H)3(μ3-H)", Organometallics, 1993, 12, 3788.
  72. Casey, C.; Widenhoefer, R.; Hallenbeck, S.; Gavney, J., "Reaction of CO and tert-Butyl Isocyanide with the Cluster Cp*3Co3(μ2-H)3(μ3-H): Facile Hydrogen Transfer to Isocyanide Forms Cp*3Co3(μ2-H)(μ3-η2-HC=NCMe3)", J. Chem. Soc., Chem. Commun., 1993, 1692.
  73. Kersten, J.L.; Rheingold, A.L.; Theopold, K.H.; Casey, C.P.; Widenhoefer, R.A.; Hop, C.E.C.A., "'[Cp*Co=CoCp*]' is a Hydride", Angew. Chem., 1992, 104, 1364 (Angew. Chem., Int. Ed. Engl., 31, 1341.).
  74. Casey, C.P.; Widenhoefer R.a.; O'Connor, J.M., "Phosphine Induced Cyclopentadienyl Ring Slippage Catalyzes CO Insertion into a Methyl Rhenium Compound to Produce an Acetyl Rhenium Compound", J. Organomet. Chem., 1992, 428, 99.