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Chemistry

Timothy Beng

 

 

Timothy Beng

Assistant Professor, Organic Chemistry

Phone: (509) 963-1126
Fax: (509) 963-1050
Email: timothyb@cwu.edu
Office: Science Building 302E

CWU Courses

Organic Chemistry Lecture
Organic Chemistry Lab
Current Topics in Chemistry-Chemistry of Heterocycles

Education

o    2011 – PhD University of Arkansas

o    2004 - MS, East Tennessee State University

o    2001 - BS, University of Buea

Research Interests

Development of Synthetic Methodology for Efficient and Expedient Functionalization of Nitrogen and Oxygen-Containing Heterocycles for Eventual Application in Natural and Unnatural Product Synthesis

Selected Publications

Independent Career

  • Timothy K. Beng, Spencer Langevin, Hannah Braunstein and Monique Khim; “Regiocontrolled synthesis of (hetero)aryl and alkenyl dehydropyrrolidines, dehydropiperidines and azepenes by Ru-catalyzed, heteroatom-directed α-C-H activation/cross-coupling of cyclic enamides with boronic acids” Organic and Biomolecular Chemistry, 2016, Advance Article, DOI: 10.1039/C5OB02263K
  • Timothy K. Beng, Nathan Fox, Daniel P. Bassler, Amir Alwali, Kayla Sincavage, and Ann Wen V. Silaire; “Trapping of carbolithiation-derived tertiary benzylic α-lithio piperidines with carbon electrophiles: Controlling the formation of α-amino quaternary and vicinal stereocenters”, Organic and Biomolecular Chemistry, 2015, 13, 8647
  • Timothy K. Beng, Ann Wen V. Silaire, Amir Alwali, and Daniel P. Bassler; “One-shot access to α,β-difunctionalized azepenes and dehydropiperidines by reductive cross-coupling of α-selenonyl-β-selenyl enamides with organic bromides”, Organic and Biomolecular Chemistry, 2015, 13, 7915
  • Timothy K. Beng, Kayla Sincavage, Ann Wen V. Silaire, Amir Alwali, Daniel P. Bassler, Laura Spence, and Oliver Beale; “Direct access to functionalized benzotropones, azepanes and piperidines by reductive cross-coupling of α-bromo enones with α-bromo enamides”, Organic and Biomolecular Chemistry, 2015, 13, 5349
  • Daniel P. Bassler, Amir Alwali, Laura Spence, Oliver Beale, and Timothy K. Beng; “Cobalt-Catalyzed Arylation and Alkenylation of Alpha-Bromo Eneformamides and Enecarbamates by Cross-Coupling with Organic Bromides: Application to the Synthesis of Functionalized Piperidines and Azepanes”, Journal of Organometallic Chemistry, 2015, 780, 6-12
  • Daniel P. Bassler, Laura Spence, Amir Alwali, Oliver Beale, and Timothy K. Beng; "Expedient Access to α,β-Difunctionalized Azepenes using α-Chloro Eneformamides: Application to the One-Pot Synthesis of 2-Benzazepanes", Organic and Biomolecular Chemistry, 2015, 13, 2285.
  • Timothy K. Beng and Nathan Fox, "Diastereoselective Synthesis of α,α,α’-Trisubstituted Pyrrolidines and Piperidines by Directed Sequential Lithiation/Alkylation", Tetrahedron Lett. 2015, 56, 119.
  • Timothy K. Beng and Daniel P. Bassler, "Vicinal Difunctionalization of Dehydropiperidines using α-Halo Eneformamides", Tetrahedron Lett. 2014, 55, 6662.

 

Postdoctoral Studies

  • Timothy K. Beng, Hironori Takeuchi, Manuel Weber, and Richmond Sarpong; “Stereocontrolled synthesis of vicinally functionalized piperidines by nucleophilic β-addition of alkyllithiums to α-aryl substituted piperidine enecarbamates”, Chem. Commun., 2015, 61, 7653
  • Timothy K. Beng, Sidney M. Wilkerson-Hill, and Richmond Sarpong, "Direct Access to Functionalized Azepanes by Cross-Coupling with Alpha-Halo Eneformamides", Org. Lett. 2014, 16, 916. Corrigendum: Org. Lett. 2014, 16, 3170
  • Timothy K. Beng, Jin Sun Woo, and Robert E. Gawley, Synthetic Applications and Inversion Dynamics of Configurationally Stable 2-Lithio-2-aryl-Pyrrolidines and -Piperidines, J. Am. Chem. Soc. 2012, 134, 14764-14771

 

Selected Honors and Awards

Research Mini Grant, Committee of Faculty Scholarship, Susquehanna University       2014 – current

Research Funds, Department of Chemistry, Susquehanna University                               2014 – current

Ruth L. Kirschstein National Research Service Award (F32 Postdoctoral Fellowship) 2012 – 2014

Invited Speaker, RSC 21st Heterocyclic & Synthetic Group Symposium, Grasmere        2013

Two Golden Tusk Awards for Excellence in Teaching, University of Arkansas    2012

NIH Travel Grant, Pacifichem, Honululu, Hawaii            2010        

NSF Travel Grant, Gordon Research Conference, Salve Regina, Newport, Rhode Island     2010

University of Arkansas Travel Grant, 62nd Regional ACS Meeting, San Francisco         2010

Teaching & Research Assistantships, University of Arkansas                                              2007 – 2011

Margaret Sells Scholarship, East Tennessee State University         2003

Graduate Fellowship, East Tennessee State University                                                        2003 – 2004

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