Molecular Pubs
This lists publications from my own molecular work (mostly before 1992) and then also in collaborative work, predominantly in association with single-crystal XRD work.
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- “Cyclization Reactions of In-Situ Generated Acyl Ketene with Ynones to Form Oxacycles,” Erandi Liyange Perera, Donald Wink, Yanshu Luo, Yuanzhi Xia, Daesung Lee.* J. Org. Chem. , 2024, 89, 4496-4502. DOI:10.1021/acs.joc.3c02711.
- “Gold-Catalyzed N-Alkenylation of Isoxazolines and the Use of Alkenyl Gold Intermediates in the Synthesis of 2-Amino-1-Pyrrolines,” Abdullah Alshreimi, Guanqun Zhanga, Esther J. Shim, Donald Wink, Laura L Anderson.* ACS Catalysis , 2024, 14(4) 2229-2234. DOI:10.1021/acscatal.3c05824
- “Regioselective Reductive Elimination from Bismuth(V) Compounds for Aryl Transfer to Nucleophiles,” Shuvra Debnath, Stephen G. DiMagno, Donald J. Wink, Audra G. Lemley, James M. Kelly.* Adv. Synth. Catal., 2024, 366, 1128-1136. DOI:10.1002/adsc.202301148.
- “Cycloisomerization of Alkyne-Tethered N-Acyloxycarbamates to 2-(3H)Oxazolones through Nitrenoid-Mediated Carboxyamidation,” Siyuan Su, Tongtong Wu, Prof. Yuanzhi Xia, Donald J. Wink, Daesung Lee.* Chemistry: A European Journal, 2023, e202203371 . DOI: 10.1002/chem.202203371.
- “Substituent and Solvent Effect Studies of N-Alkenylnitrone 4π-Electrocyclizations,” Laura Alonso, Michael Shevlin, Abdullah Alshreimi, Tyler Reidl, Donald Wink, Laura L. Anderson.* Chemistry: A European Journal, 2023, e202300551. DOI: g/10.1002/chem.202300551.
- “Synthesis and structural characterization of the first stable cycloheptatrienyl metal complexes bearing a CF3 moiety. DFT investigations of structures, energetics, NBO charges, and frontier MOs of W-CF3 and Mo-CF3 with η7-C7H7 and η5-C5H5,” Chris Douvris,* Christos Lampropoulos, David Matatov, Donald J. Wink, Aleksey E. Kuznetsov, and Derek Bussan. Polyhedron, 2022, 221, 115875. DOI: 10.1016/j.poly.2022.115875.
- “Rh2(II)-Catalyzed Intermolecular N-Aryl Aziridination of Olefins Using Nonactivated N Atom Precursors,” Tianning Deng, Wrickban Mazumdar, Yuki Yoshinaga, Pooja B. Patel, Dana Malo, Tala Malo, Donald J. Wink, and Tom G. Driver.* J. Amer. Chem. Soc., 2021, 143(45), 19149-19159. DOI: 10.1021/jacs.1c09229.
- “Counterion Control of t-BuO-Mediated Single Electron Transfer to Nitrostilbenes Constructs N-Hydroxyindoles or Oxindoles,” Yingwei Zhao, Haoran Zhu, Donald J. Wink, Siyoung Sung, Joseph M. Zadrozny, Tom G. Driver.* Angew. Chem. Int. Ed. Engl., 2021, 60. 19207-19213. DOI: 10.1002/anie.202104319.
- “Ruthenabenzene: A Robust Precatalyst,” Saswata Gupta, Siyuan Su, Yu Zhang, Peng Liu, Donald Wink, Daesung Lee.* J. Amer. Chem. Soc. , 2021, 143, 7490-7500. DOI:10.1021/jacs.1c02237.
- “Alkene-chelated Ruthenium Alkylidenes–A Missing Link to New Catalysts,” Saswata Gupta, Venkata Sabbasani, Siyuan Su, Donald Wink, Daesung Lee.* ACS Catalysis, 2021, 11, 1977-1987. DOI: 10.1021/acscatal.0c04972.
- “Synthesis of Spirocyclic 1-Pyrrolines from Nitrones and Arynes via a Dearomative [3,3′]-Sigmatropic Rearrangement,” Abdullah S. Alshreimi, Guanqun Zhang, Tyler W. Reidl, Ricardo L. Pena, Nicholas-George Koto, Shahidul M. Islam, Donald J. Wink, and Laura L. Anderson.* Angew. Chem. Int. Ed. Engl. , 2020, 59, 15244-15248. DOI: 10.1002/anie.202004652.
- “Oxidation of Nonactivated Anilines to Generate N-Aryl Nitrenoids,” Tianning Deng, Wrickban Mazumdar, Russell L. Ford, Navendu Jana, Ragda Izar, Donald J. Wink, Tom G. Driver.* J. Amer. Chem. Soc., 2020, 142 , 4456-4463. DOI: 10.1021/jacs.9b13599.
- “C-H Insertion by Alkylidene Carbenes to Form 1,2,3-Triazines and Anionic [3 + 2] Dipolar Cycloadditions to Form Tetrazoles: Crucial Roles of Stereoelectronic and Steric Effects,” Fai-Jie Chen, Youngjia Li, Man Xu, Yuanzhi Xia*, Donald J. Wink, Daesung Lee.* Org. Lett., 2020, 22, 718-723. DOI: 10.1021/acs.orglett.9b04548.
- “Silver-catalyzed Selective Multicomponent Coupling Reactions of Arynes with Nitriles and Isonitriles,” Sourav Ghorai, Yongjia Lin, Yuanzhi Xia*, Donald J. Wink, Daesung Lee.* Org. Lett., 2020, 22, 642-647. DOI: 10.1021/acs.orglett.9b04416.
- “Silver-catalyzed Annulation of Arynes with Nitriles for Synthesis of Structurally Diverse Quinazolines,” Sourav Ghorai, Yongjia Lin, Yuanzhi Xia*, Donald J. Wink, Daesung Lee* Org. Lett., 2020, 22, 626-630. DOI: 10.1021/acs.orglett.9b04395.
- “Catalyst-controlled cascade synthesis of bridged bicyclic tetrahydrobenz[b]azepine-4-ones.” Michelle A. Kroc, Maciej Markiewicz, Wiktoria H. Pace, Donald J. Wink and Laura L. Anderson*. Chem. Commun., 2019, 55, 2309-2312. DOI: 10.1039/C8CC10313E.
- “Controlling the Selectivity Patterns of Au-Catalyzed Cyclization-Migration Reactions,” Mo Chen, Naijing Su, Tianning Deng, Donald J. Wink , Yingwei Zhao, and Tom G. Driver.* Org. Lett., 2019, 21, 1555-1558. DOI: 10.1021/acs.orglett.8b03888.
- “Alder-Ene Reactions Driven by High Steric Strain and Bond Angle Distortion to Form Benzocyclobutenes,” Saswata Gupta, Yongjia Lin, Yuanzhi Xia*, Donald J. Wink, and Daesung Lee.* Chemical Science, 2019, 10, 2212-2217. DOI: 10.1039/C8SC04277B.
- “Generation and Rearrangement of N,O Dialkenylhydroxylamines for the Synthesis of 2-Aminotetrahydrofurans.” Jongwoo Son, Tyler Reidl, Ki Hwan Kim, Donald J. Wink, Laura L. Anderson.* Angew. Chem. Int. Ed. Engl. , 2018, 57, 6597-6600. DOI: 10.1002/anie.201800908.
- “Cascade Synthesis of 3-Functionalized Indoles from Nitrones and Their Conversion to Cycloheptanone-Fused Indoles.” Michelle Kroc, Ami Prajapati, Donald J. Wink, Laura. L. Anderson.* J. Org. Chem. , 2018, 83, 1085-1094. DOI: 10.1002/acs.joc.7b02638.
- “Achieving Site-Selectivity in Metal-Catalyzed Electron-Rich Carbene Transfer Reactions from N-Tosylhydrazones.” Naijing Su, Tianning Deng, Donald Wink, Tom G. Driver.* Org. Lett., 2017, 19, 3990-3993. DOI: 10.1021/acs.orglett.7b01694.
- “Facile Synthesis of Azetidine Nitrones and Diastereoselective Conversion to Densely-Substituted Azetidines.” Tyler W Reidl, Jongwoo Son, Donald J Wink, Laura L Anderson.* Angew. Chem. Int. Ed. Engl. , 2017, 56, 11579 –11583. DOI:10.1002/ange.201705681.
- “Synthesis and Properties of New N-Heteroheptacenes for Solution-Based Organic Field Effect Transistors” Zhou, F.; Liu, S.; Santarsiero, B. D.; Wink, D. J.; Boudinet, D.; Facchetti, A.; Driver, T. G.* Chem. Eur. J. 2017, 23, 12542-12549. DOI:10.1002/chem.201701966.
- “Rh2(II)-Catalyzed Ring Expansion of Cyclobutanol-Substituted Aryl 2 Azides To Access Medium-Sized N-Heterocycles.” Wrickban Mazumdar, Navendu Jana, Bryant T. Thurman, Donald J. Wink, and Tom G. Driver.* J. Amer. Chem. Soc. , 2017, 139, 5031-5034. DOI:10.1021/jacs.7b01833.
- “Synthesis of α-oxygenated ketones and substituted catechols via the rearrangement of N-enoxy- and N-aryloxyphthalimides.” Kroc, M. A., Patil, A., Carlos, A., Ballantine, J., Aquilar, S., Mo, D.-L., Wang, H.-Y., Mueller, D. S., Wink, Donald J., Anderson, Laura L.* Tetrahedron, 2017, 73, 4125-4137. DOI:10.1016/j.tet.2017.01.061.
- “Single-Step Modular Synthesis of Unsaturated Morpholine N-Oxides and Their Cycloaddition Reactions.” Soo, J., Kim, K. H., Mo, D.-L., Wink, D. J., Anderson, L. L.*
Angew. Chem. Int. Ed. Engl. , 2017, 56, 3059-3063. DOI:10.1002/anie.201611791 - “Catalytic Asymmetric Synthesis of Dihydropyrido[1,2-a]indoles from Nitrones and Allenoates” Wiktoria H. Pace,Dong-Liang Mo, Tyler W. Reidl, Donald J. Wink, and Laura L. Anderson.* Angew. Chem. Int. Ed. Engl. , 2016, 9183-9186.
- “Copper-Catalyzed Formation of α-Alkoxycycloalkenones from N-Tosylhydrazones.” Su, N.; Theorell, J. A.; Wink, D. J., Driver, T. G.* Angew Chem. Int. Ed. Engl., 2015, 54, 12942-12946. DOI:10.1002.anie.201505993.
- “Au-Catalyzed Pentannulation Reaction of Propargylic Esters Occurring at C(sp3)-H Site.” Kazem Shiroodi, R.; Sugawara, M.; Ratushnyy, M.; Yarbrough, D. C.; Wink, D. J.; Gevorgyan, V.* Org. Lett., 2015, 17, 4062-4065. DOI:10.1021/acs.orglett.5b01983.
- “Sequential Reactions of Trimethylsilyldiazomethane with 4-Alkenyl Ketones and Aldehydes Catalyzed by Lewis Bases” by Huaqing Liu, Matthew O’Connor, Chunrui Sun,
Donald Wink, and Daesung Lee*. Org. Lett., 2013, 15, 2974-2977. DOI: 10.1021/ol401124t. - “Cluster-Seeded Synthesis of Doped CdSe:Cu4 Quantum Dots” by Ali M. Jawaid, Soma Chattopadhyay, Donald J. Wink, Leah E. Page, and Preston T. Snee*. ACS Nano , 2013, 7(4), pp 3190-3197. DOI: 10.1021/nn305697q.
- “Pyridine Group Assisted Addition of Diazo-Compounds to Imines in the 3-CC Reaction of 2-Aminopyridines, Aldehydes, and Diazo-Compounds,” by Anton V. Gulevich, Victoria Helan, Donald J. Wink, and Vladimir Gevorgyan* Org. Lett., 2013 15 (4), pp 956-959. DOI: 10.1021/ol400148.
- “Preparation and Rearrangement of N-Vinyl Nitrones: Synthesis of Spiroisoxazolines and Fluorene-Tethered Isoxazoles,” by Dong-Liang Mo, Donald A. Wink, and Laura L. Anderson,* Org. Lett., 2012 14(20), 5180-5183. DOI: 10.1021/ol3022885.
- “Structure and Reactivity of Alkyne-Chelated Ruthenium Alkylidene Complexes,” by K.-P. Wang, S. Y.Yun, D. Lee,* and D. J. Wink, J. Amer. Chem. Soc. , 2009, 130, 15114-15115. “Structure and Reactivity of Alkynyl Ruthenium Alkylidenes” by S. Y. Yun, M. Kim, D. Lee,* and D. J. Wink, J. Amer. Chem. Soc. , 2009, 130, 24-25.
- “On the Use of 3,5-Di-O-benzylidene and 3,5-Di-O-(di-tert-butylsilylene)-2-O-benzylarabinothiofuranosides and their Sulfoxides as Glycosyl Donors for the Synthesis of β-Arabinofuranosides: Importance of the Activation Method,” by D. Crich,* C. M. Pedersen, A. A. Bowers, and D. J. Wink, J. Org. Chem. , 2007, 72 1553-1565.
- “3-(4-methoxyphenyl)-1-methyl-2-azabicyclo[3.2.0]hept-2-en-6-ol” by Anna W. Sromek, Arnold L. Rheingold, Donald J. Wink, and Vladimir Gevorgyan.* Synlett, 2006, 2325-2328. “Expedient Two Step Synthesis of Phenolic Cyclitols from Benzene,” by David Crich,* Dan Grant, and Donald J. Wink J. Org. Chem. 2006, 71, 4521-4524.
- “Approximate OH5 Ring Conformation of 2,3-O-carbonate Protected α- and β-L-Rhamnopyranosides as Confirmed by X-ray Crystallography,” by David Crich,* A. U. Vinod, John Picione, and Donald J. Wink, ARKIVOC Volume 2005, Part(vi).
- “TiCl4 Promoted Multicomponent Reaction: a New Entry to Functionalized α-Amino Acids,” Arun K. Ghosh,* Chun-Xiao Xu and Donald Wink, Org. Lett. , 2005; 7, 7-10.
- “Design and synthesis of highly constrained factor Xa inhibitors: amidine-Substituted bis(benzoyl)-[1 and 3]-diazepan-2-ones and bis(benzylidene)-bis(gem-dimethyl)cycloketones,” Jian Cui, David Crich,* Donald Wink, Matthew Lam, Arnold L. Rheingold, David A. Case, WenTao Fu, Yasheen Zhou, Mohan Rao, Arthur J. Olson and Michael E. Johnson, Bioorganic & Medicinal Chemistry, 2003, 11, 3379-3392.
- “Highly Regiocontrolled Pd-Catalyzed Cross-Coupling Reaction of Terminal Alkynes and Allenylphosphine Oxides,” Michael Rubin, Jelena Markov, Stepan Chuprakov, Donald J.
Wink, and Vladimir Gevorgyan,* J. Org. Chem. , 2003, 68, 6251-6256. - “Template-Directed C-H Activation: Development and Application to the Total Synthesis of 7-Episordidin,” Duncan J. Wardrop, * Raymond E. Forslund, Chad L. Landrie,
Adriana I. Velter, Donald J. Wink, and Bhushan Surve, Tetrahedron: Asymmetry, 2003, 14, 929-940. - “Stereoselective Formation of Glycosyl Sulfoxides and Their Subsequent Equilibration. Ring Inversion of an α-Xylopyranosyl Sulfoxide Dependent on the Configuration at Sulfur,” David Crich,* Jan Mataka, and Donald J. Wink, J. Am. Chem. Soc., 2002, 124, 6028.
- “Radical Contraction of 1,3,2-Dioxaphosphepanes to 1,3,2-Dioxaphosphorinanes: A Kinetic and 17O NMR Spectroscopic Study,” David Crich,* Fernando Sartillo-Piscil, Leticia Quintero-Cortes, and Donald J. Wink, J. Org. Chem. ; 2002, 67, 3360.
- “Direct Synthesis of β-Mannans. A Hexameric [→3)-β-D-Man-(1 4)-β-D-Man-(1]3 Subunit of the Antigenic Polysaccharides from Leptospira biflexa and the Octameric (1→
2)-Linked β-D-Mannan of the Candida albicans Phospholipomannan. X-ray Crystal Structure of a Protected Tetramer,” David Crich,* Hongmei Li, Qingjia Yao, Donald J. Wink, Roger D. Sommer, and Arnold L. Rheingold. J. Am. Chem. Soc., 2001, 123, 5826. - “Stereoselective Construction of Quaternary Carbon Centers by Three Component Coupling Reactions,” Arun K. Ghosh,* Reiko Kawahama and Donald Wink, Tetrahedron
Lett., 2000, 41, 8425. - “Neotame: An Alkylated Dipeptide and High-intensity Sweetener,” Donald J. Wink, Stephen A. Schroeder, Indra Prakash, K.-C. Lam, and Arnold Rheingold. Acta Cryst. , 1999. C55, 1365.
- “Diverging Effects of Steric Congestion on the Reaction of Tributylstannyl Radicals with Areneselenols and Aryl Bromides and Their Mechanistic Implications,” David Crich, Jae-Taeg Hwang, Stephane Gastaldi, Francesco Rucepero, and Donald J. Wink. J. Org. Chem. , 1999, 64, 2877.
- “Synthesis of Fully-substituted Enediynes by the Corey-Winter Reaction.” David C. Crich, * Anna B. Pavlovic, and Donald J. Wink, Synth. Commun. 1999, 29, 359.
- “Stereoselective Sulfoxidation of α-Mannopyranosyl Thioglycosides: the exo-Anomeric Effect in Action” David C. Crich, * Jan Mataka, Donald J. Wink, K.-C. Lam,
and Arnold Rheingold. Chem. Commun., 1998, 2763. - “Michael Addition to Unsaturated Arene Ruthenum(II) Cyclopentadiene Complexes. Endo Nucleophilic Addition.” Robert M. Moriarty, * Livia A. Enache, Richard Gilardi,
George Gould, and Donald J. Wink, Chem. Commun., 1998, 1155. - “Absence of Diffusively Free Radical Cation Intermediates in Reactions of β-(Phosphatoxy)alkyl Radicals.” Seung-Yong Choi, David Crich,* John H. Horner, Xianhai Huang, Feliz N. Martinez, Martin Newcomb, Donald J. Wink, and Qingwei Yao, J. Amer. Chem. Soc. , 1998, 120, 211.
- “Synthesis and Characterization of a Constructed and Rigid Ligand System for Five Coordinate Binuclear Metal Complexes.” Lisheng Cai, * Charles O’Conner, Wenge Xie,
Hussein Mahmoud, and Donald J. Wink, Inorg. Chim. Acta., 1997, 263, 231. - “Diastereomeric Octahydronaphthoquinolizines.” Bing Cai, Uanping Pan, Hangxia Qiu, John C. Dewan, Donald J. Wink, Randall J. Murphy, and David I. Schuster, Acta Cryst. Sect. C., 1994, c50, 609.
- “Octahydronaphthoquinolizines, a New Biologically Active Tetracyclic Ring System.” Bing Cai, John C. Dewan, Donald J. Wink, Randall B. Murphy, and David I. Schuster, Tetrahedron Lett. 1993, 34, 2067.
- “Characterization and Application of Catalytic Regioselective Hydroformylation with a Cationic Bis(dioxaphospholane)rhodium Catalyst Precursor.” Thomas J. Kwok and Donald J. Wink, Organometallics, 1993, 12, 1954.
- “Stereochemistry of [2+2] Photocycloaddition of Cyclic Enones to Alkenes: Structural and Mechanistic Considerations in Formation of Trans-Fused Cycloadducts.” David I. Schuster, Nikolas Kaprinidis, Donald J. Wink, and John C. Dewan J. Org. Chem. , 1991, 56, 561.
- “A Polyfunctional Chromium Arene Complex: Synthesis and Derivitization of Tricarbonyl(η6-1,4-epoxy-1,2,3,4-tetrahydronaphthalene)chromium (0).” Peter C. Nirchio and Donald J. Wink, Organometallics , 1991, 10, 2499.
- “Steric Factors in Neutral and Anionic Alkyne Complexes of Tungsten(0)” Donald J. Wink and N. John Cooper, Organometallics , 1991, 10, 494.
- “Efficient Synthesis of Substituted Derivatives of (Naphthalene)chromium(0) Carbonyls.” Peter C. Nirchio and Donald J. Wink, Organometallics , 1991, 10, 336.
- “Structural Evidence for Ligand Backbonding in Distortions from Octahedral Geometry of Complexes of d6-ML4 Fragments with π-Ligands.” Donald J. Wink, Organometallics , 1991, 10, 442.
- “Anomolous carbonylation of [Pd(dppm)(O2CCF3)]2 to give an Asymmetric μ-CO Complex.” Donald J. Wink, B. Timothy Creagan, and Steve Lee, Inorg. Chimica Acta , 1991, 180, 183.
- “Synthesis of Simple CrL4(alkyne) Complexes by Displacement of a Labile Cyclooctadiene Ligand.” Donald J. Wink and B. Timothy Creagan, J. Amer. Chem. Soc., 1990, 112, 8585.
- “Photochemical Synthesis and Thermal Interconversion of mer- and fac-W(CO)3(P(OMe)3(η4 -1,5-cyclooctadiene).” Donald J. Wink and Chang Kyeong Oh, Organometallics, 1990, 9, 2406.
- “Structure of (2,3-O-fluorenylidene)-L-tartrate.” Donald J. Wink, Acta Cryst. 1990, 46B, 1058.
- “Charge Dependence of Fe(II)-Catalyzed DNA Damage.” Min Lu, Qiu Guo, Donald J. Wink, and Neville R. Kallenbach, Nucl. Acids Res., 1990, 18, 3333.
- “Isolation and Characterization of a Labile Intermediate in the Nucleophilic Attack of Hydride on a Chromium Diene Complex: [NEt4][Cr(CO)3(P(OMe)3)(η3-Z-MeCHCHCH2)].” Nai-Fang Wang, Donald J. Wink, and John C. Dewan, Organometallics , 1990, 9, 335.
- “Qualitative Molecular Orbital Studies of d6-M(alkyne) 2L2 and d6-M(alkyne)3L Complexes.” Donald J. Wink and B. Timothy Creagan, Organometallics , 1990, 9, 328.
- “Drug Binding by Branched DNA: Selective Interaction of Tetrapyridyl Porphyrins with and Immobile Junction.” Min Lu, Robert F. Pasternack, Donald J. Wink, Nadrian C. Seeman, and Neville R. Kallenbach, Biochemistry, 1990, 26, 1614.
- “Structure of (Bis(diphenylphosphino)methane)bis(trifluoracetato)palladium(II).” Donald J. Wink, Acta Cryst. 1990, 46B, 56.
- “Practical Syntheses of Chelating Bis(dioxaphospholane) Ligands through Chlorodioxaphospholane Intermediates and Demonstration of Catalytic Competence of Bis(phosphite)rhodium Cations.” Donald J. Wink, Thomas J. Kwok, and Allen Yee. Inorg. Chem. , 1990, 29, 5006.
- “Substitution Reactions of mer-Cr(CO)3(P(OMe)3)(η4-1,5-cyclooctadiene); Ligand Effects on Diene Binding Preferences.” Donald J. Wink, Nai-Fang Wang, and B. Timothy Creagan, Organometallics , 1989, 8, 561.
- “Regio- and Stereoselective Conversion of Chromium Dienes into Olefins via Anionic Allyl Complexes.” Donald J. Wink, Nai-Fang Wang, and James P. Springer, Organometallics , 1989, 8, 259.
- “One- and Two-Electron Reduction of a Chromium(0) Alkyne Complex and the Isolation of the Chromium(1 ) Product.” Donald J. Wink, James R. Fox, and N. John Cooper, J. Amer. Chem. Soc. , 1985, 107, 5012.
- “Exchange of Bridging and Terminal Hydrides in Co[(terpy)(H2BH2)].” Donald J. Wink and N. John Cooper, J. Chem. Soc. Dalton Trans., 1984, 1257.
- “Reinvestigation of the Reaction of tert-Butyllithium with Uranium Tetrachloride: Formation of Catalytically Active Uranium(III) Hydride Complexes.” William J. Evans, Donald J. Wink, and David R. Stanley, Inorg. Chem. , 1982, 21, 2565.
- “A Simple, Inexpensive Synthesis of Dipotassium Cyclooctetraene.” William J. Evans, Donald J. Wink, Andrea L. Wayda, and David Little, J. Org. Chem. , 1981, 46, 3925.
Patents
- U.S. No. 5,179,055. “Cationic Rhodium Bis(dioxaphophorus heterocycle) Complexes and Their Use in the Branched Product Regioselective Hydroformylation of Olefins.” Donald J. Wink and Thomas J. Kwok, 1993.
- U.S. No. 5,260,491. “Cationic Rhodium Bis(dioxaphophorus heterocycle) Complexes and Their Use in the Branched Product Regioselective Hydroformylation of Olefins.” Donald J. Wink and Thomas J. Kwok, 1993.