Janice E. Sieser | Researchain

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Featured researches published by Janice E. Sieser.

Tetrahedron Letters | 2000

A practical, efficient, and rapid method for the oxidation of electron deficient pyridines using trifluoroacetic anhydride and hydrogen peroxide–urea complex

Stephane Caron; Nga M. Do; Janice E. Sieser

Abstract A general method for the oxidation of electron-poor pyridines to their N-oxides using UHP and TFAA in either CH2Cl2 or CH3CN was developed. The methodology proved to tolerate a number of functional groups and substitution patterns and proceeded on notoriously difficult to oxidize substrates.

Chemical Communications | 2002

Synthesis of the kappa-agonist CJ-15,161 via a palladium-catalyzed cross-coupling reaction

Arun Ghosh; Janice E. Sieser; Stephane Caron; Timothy J. N. Watson

Syntheses of CJ-15,161 (1) involving intermolecular N-arylation of an appropriately functionalized diamine, obtained from the precursor alpha-amino acids or, more conveniently, from the corresponding 1,2-amino alcohols via 1,2,3-oxathiazolidine-2,2-dioxide 22, are reported.

Tetrahedron Letters | 2006

Development of nonproprietary phosphine ligands for the Pd-catalyzed amination reaction

Robert A. Singer; Michael Dore; Janice E. Sieser; Martin A. Berliner

Organic Process Research & Development | 2008

Streamlined Synthesis of the Bippyphos Family of Ligands and Cross-Coupling Applications

Gregory J. Withbroe; Robert A. Singer; Janice E. Sieser

Organic Letters | 2003

Palladium-catalyzed synthesis of N-aryloxazolidinones from aryl chlorides.

Arun Ghosh; Janice E. Sieser; Maxime Riou; Weilling Cai; Luis Rivera‐Ruiz

Organic Process Research & Development | 2007

Process Research and Development of an NK-1 Receptor Antagonist. Enantioselective Trifluoromethyl Addition to a Ketone in the Preparation of a Chiral Isochroman

Stephane Caron; Nga M. Do; Janice E. Sieser; Patrice Arpin; Enrique Vazquez

Journal of Organic Chemistry | 2006

Cu-Catalyzed N-Arylation of Oxazolidinones: An Efficient Synthesis of the κ-Opioid Receptor Agonist CJ-15161†

Arun Ghosh; Janice E. Sieser; Stephane Caron; Michel Couturier; Kristina Dupont-Gaudet; Melina Girardin

Organic Process Research & Development | 2014

Development of an Efficient Pd-Catalyzed Coupling Process for Axitinib

Brian P. Chekal; Steven M. Guinness; Brett M. Lillie; Robert William Mclaughlin; Charles W. Palmer; Ronald J. Post; Janice E. Sieser; Robert A. Singer; Gregory W. Sluggett; Rajappa Vaidyanathan; Gregory J. Withbroe

Archive | 2003

Methods for preparing n-arylated oxazolidinones via a copper catalyzed cross coupling reaction

Arun Ghosh; Stephane Caron; Janice E. Sieser

Chimia | 2006

Process research and scale-up of the κ-opioid receptor agonist CJ-15,161 drug candidate

Brian M. Andresen; Stephane Caron; Michel Couturier; Keith Michael Devries; Nga M. Do; Kristina Dupont-Gaudet; Arun Ghosh; Melina Girardin; Joel M. Hawkins; Teresa Margaret Makowski; Maxime Riou; Janice E. Sieser; John L. Tucker; Brian C. Vanderplas; Timothy J. N. Watson

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