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Whitney K. Walker
Researcher at Brigham Young University
Publications - 8
Citations - 100
Whitney K. Walker is an academic researcher from Brigham Young University. The author has contributed to research in topics: Allylic rearrangement & Catalysis. The author has an hindex of 4, co-authored 7 publications receiving 87 citations. Previous affiliations of Whitney K. Walker include Genentech.
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Journal ArticleDOI
Origin of Fast Catalysis in Allylic Amination Reactions Catalyzed by Pd–Ti Heterobimetallic Complexes
Whitney K. Walker,Benjamin M. Kay,Scott A. Michaelis,Diana L. Anderson,Stacey J. Smith,Daniel H. Ess,David J. Michaelis +6 more
TL;DR: Computational and experimental studies demonstrate that the Pd-Ti interaction induces and is responsible for significantly lower barriers and faster catalysis for allylic aminations.
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Allylic aminations with hindered secondary amine nucleophiles catalyzed by heterobimetallic Pd-Ti complexes.
TL;DR: Three titanium-containing ligands are shown to assemble active catalysts in situ and enable catalysis at room temperature, and a variety of sterically bulky secondary amines are efficiently allylated in high yields with as little as 1 mol % palladium catalyst.
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Electrophilic activation of alkynes for enyne cycloisomerization reactions with in situ generated early/late heterobimetallic Pt-Ti catalysts.
TL;DR: In situ formation of heterobimetallic Pt-Ti catalysts enables rapid room temperature catalysis in enyne cycloisomerization reactions and the Lewis acidic titanium atom in the ligand framework is shown to be essential for fast catalysis.
Journal ArticleDOI
A Strecker approach to 2-substituted ethyl 5-aminothiazole-4-carboxylates
Ken Cheng,Andrew McClory,Whitney K. Walker,Jie Xu,Haiming Zhang,Rémy Angelaud,Francis Gosselin +6 more
TL;DR: In this paper, a general approach to 2-substituted 5-aminothiazole-4-carboxylates is presented, where both aliphatic and aromatic thioamides undergo 1,2-addition to ethyl glyoxylate to give hemiaminals which, when treated with acetyl chloride, undergo elimination to the corresponding imines.
Journal ArticleDOI
Synthesis of chiral titanium-containing phosphinoamide ligands for enantioselective heterobimetallic catalysis
Chloe C. Ence,Whitney K. Walker,Ryjul W. Stokes,Erin E. Martinez,Spencer M. Sarager,Stacey J. Smith,David J. Michaelis +6 more
TL;DR: In this paper, the synthesis of six chiral titanium-containing phosphinoamide ligands is discussed, which enable enantioselective intramolecular allylic aminations with hindered amine nucleophiles and achieve selectivity up to 53% ee.