Search Results - "Whiteker, Gregory T."

Trimethylphosphate as a Methylating Agent for Cross Coupling: A Slow-Release Mechanism for the Methylation of Arylboronic Esters by He, Zhi-Tao, Li, Haoquan, Haydl, Alexander M, Whiteker, Gregory T, Hartwig, John F

“…A methyl group on an arene, despite its small size, can have a profound influence on biologically active molecules. Typical methods to form a methylarene…”
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NMR Chemical Shifts of Trace Impurities: Industrially Preferred Solvents Used in Process and Green Chemistry by Babij, Nicholas R, McCusker, Elizabeth O, Whiteker, Gregory T, Canturk, Belgin, Choy, Nakyen, Creemer, Lawrence C, Amicis, Carl V. De, Hewlett, Nicole M, Johnson, Peter L, Knobelsdorf, James A, Li, Fangzheng, Lorsbach, Beth A, Nugent, Benjamin M, Ryan, Sarah J, Smith, Michelle R, Yang, Qiang

“…The 1H and 13C NMR chemical shifts of 48 industrially preferred solvents in six commonly used deuterated NMR solvents (CDCl3, acetone-d 6, DMSO-d 6,…”
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The discovery of Arylex™ active and Rinskor™ active: Two novel auxin herbicides by Epp, Jeffrey B., Alexander, Anita L., Balko, Terry W., Buysse, Ann M., Brewster, William K., Bryan, Kristy, Daeuble, John F., Fields, Stephen C., Gast, Roger E., Green, Renard A., Irvine, Nicholas M., Lo, William C., Lowe, Christian T., Renga, James M., Richburg, John S., Ruiz, James M., Satchivi, Norbert M., Schmitzer, Paul R., Siddall, Thomas L., Webster, Jeffery D., Weimer, Monte R., Whiteker, Gregory T., Yerkes, Carla N.

“…[Display omitted] Multiple classes of commercially important auxin herbicides have been discovered since the 1940s including the aryloxyacetates (2,4-D, MCPA,…”
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Applications of the 12 Principles of Green Chemistry in the Crop Protection Industry by Whiteker, Gregory T

“…This review discusses specific examples of the application of the 12 principles of green chemistry from the crop protection industry. Many of the examples are…”
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Synthesis of Novel Fluoropicolinate Herbicides by Cascade Cyclization of Fluoroalkyl Alkynylimines by Johnson, Peter L, Renga, James M, Galliford, Christopher V, Whiteker, Gregory T, Giampietro, Natalie C

“…The cascade cyclization of fluoroalkyl alkynylimines with primary amines has been modified to allow the synthesis of 4-amino-5-fluoropicolinates. Use of…”
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Highly Regio- and Enantioselective Asymmetric Hydroformylation of Olefins Mediated by 2,5-Disubstituted Phospholane Ligands by Axtell, Alex T., Cobley, Christopher J., Klosin, Jerzy, Whiteker, Gregory T., Zanotti-Gerosa, Antonio, Abboud, Khalil A.

“…Off the shelf: The commercially available ligand (R,R)‐1,2‐bis(2,5‐diphenylphospholano)ethane ((R,R)‐Ph‐bpe) has been identified as an excellent ligand for…”
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Bridging Group Effects in Chelating Bis(2,5-diphenylphospholane) Ligands for Rhodium-Catalyzed Asymmetric Hydroformylation by Axtell, Alex T, Klosin, Jerzy, Whiteker, Gregory T, Cobley, Christopher J, Fox, Martin E, Jackson, Mark, Abboud, Khalil A

“…A series of seven bis(2,5-diphenylphospholane) ligands has been evaluated for utility in rhodium-catalyzed asymmetric hydroformylation. The ligands differ in…”
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Effect of the Dihedral Angle of Biaryl-Bridged Bisphosphite Ligands on Enantioselectivity and Regioselectivity of Asymmetric Hydroformylation by Cobley, Christopher J, Froese, Robert D. J, Klosin, Jerzy, Qin, Cheng, Whiteker, Gregory T, Abboud, Khalil A

“…Eight new biaryl-bridged bisphosphite ligands have been synthesized and applied in rhodium-catalyzed asymmetric hydroformylation of styrene, allyl cyanide, and…”
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Synthesis of Biologically Active Amines via Rhodium−Bisphosphite-Catalyzed Hydroaminomethylation by Briggs, John R, Klosin, Jerzy, Whiteker, Gregory T

“…We report the use of a highly regioselective rhodium−bisphosphite catalyst for olefin hydroaminomethylation. This catalyst system was successfully applied in…”
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Nickel- and Palladium-Catalyzed Coupling of Aryl Fluorosulfonates with Aryl Boronic Acids Enabled by Sulfuryl Fluoride by Hanley, Patrick S, Ober, Matthias S, Krasovskiy, Arkady L, Whiteker, Gregory T, Kruper, William J

“…Herein are reported examples of the nickel- and palladium-catalyzed cross-coupling of aryl fluorosulfonates and aryl boronic acids. These reactions occur in…”
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Efficient Stereoselective Synthesis of a Key Chiral Aldehyde Intermediate in the Synthesis of Picolinamide Fungicides by Li, Fangzheng, Good, Steffen, Tulchinsky, Michael L, Whiteker, Gregory T

“…A highly stereoselective and efficient synthesis of (4S,5S,6S)-6-(benzyloxy)-5-phenoxy-4-propoxyheptanal, a key intermediate for syntheses of picolinamide…”
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Aqueous Suzuki Coupling Reactions of Basic Nitrogen-Containing Substrates in the Absence of Added Base and Ligand: Observation of High Yields under Acidic Conditions by Li, Zhao, Gelbaum, Carol, Fisk, Jason S, Holden, Bruce, Jaganathan, Arvind, Whiteker, Gregory T, Pollet, Pamela, Liotta, Charles L

“…A series of aqueous heterogeneous Suzuki coupling reactions of substrates containing basic nitrogen centers with phenylboronic acid in the absence of added…”
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XL-Xantphos: Design and Synthesis of a Mechanistic Probe of Xantphos O‑Coordination in Catalytic Reactions by Whiteker, Gregory T, Li, Fangzheng, Froese, Robert D. J, Tulchinsky, Michael L, Hazari, Amaruka, Klosin, Jerzy

“…The synthesis and characterization of an analog of the Xantphos ligand that is geometrically incapable of coordination of the xanthene bridging oxygen atom is…”
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Computational and Experimental Studies of Regioselective SNAr Halide Exchange (Halex) Reactions of Pentachloropyridine by Froese, Robert D. J, Whiteker, Gregory T, Peterson, Thomas H, Arriola, Daniel J, Renga, James M, Shearer, Justin W

“…The Halex reaction of pentachloropyridine with fluoride ion was studied experimentally and computationally with a modified ab initio G3MP2B3 method. The G3…”
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Synthesis of 6‑Aryl-5-fluoropicolinate Herbicides via Halex Reaction of Tetrachloropicolinonitrile by Whiteker, Gregory T, Froese, Robert D. J, Arndt, Kim E, Renga, James M, Zhu, Yuanming, Roth, Gary A, Yang, Qiang, Canturk, Belgin, Klosin, Jerzy

“…The development of a new synthesis of 6-aryl-5-fluoropicolinate herbicides is described. This general route employs the halogen exchange (halex) reaction of…”
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Computational and Experimental Studies of Regioselective S N Ar Halide Exchange (Halex) Reactions of Pentachloropyridine by Froese, Robert D J, Whiteker, Gregory T, Peterson, Thomas H, Arriola, Daniel J, Renga, James M, Shearer, Justin W

“…The Halex reaction of pentachloropyridine with fluoride ion was studied experimentally and computationally with a modified ab initio G3MP2B3 method. The G3…”
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Organometallics Roundtable 2013–2014 by Gladysz, John A, Bedford, Robin B, Fujita, Makoto, Gabbaı̈, François P, Goldberg, Karen I, Holland, Patrick L, Kiplinger, Jaqueline L, Krische, Michael J, Louie, Janis, Lu, Connie C, Norton, Jack R, Petrukhina, Marina A, Ren, Tong, Stahl, Shannon S, Tilley, T. Don, Webster, Charles Edwin, White, M. Christina, Whiteker, Gregory T

“…A panel of seventeen experts from academia, industry, and government laboratories share their thoughts on a variety of matters of importance to the readership…”
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Parallel Ligand Screening on Olefin Mixtures in Asymmetric Hydroformylation Reactions by Cobley, Christopher J, Klosin, Jerzy, Qin, Cheng, Whiteker, Gregory T

“…Herein we describe a new protocol for catalyst evaluation in asymmetric hydroformylation reactions where multisubstrate screening is performed in an array of…”
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Synthesis and Application of a New Bisphosphite Ligand Collection for Asymmetric Hydroformylation of Allyl Cyanide by Cobley, Christopher J, Gardner, Kelli, Klosin, Jerzy, Praquin, Céline, Hill, Catherine, Whiteker, Gregory T, Zanotti-Gerosa, Antonio, Petersen, Jeffrey L, Abboud, Khalil A

“…A series of mono- and bidentate phosphites was prepared with (S)-5,5‘,6,6‘-tetramethyl-3,3‘-di-tert-butyl-1,1‘-biphenyl-2,2‘-dioxy [(S)-BIPHEN] as a chiral…”
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Synthesis of new compounds related to the commercial fungicide tricyclazole by Balcer, Jesse L, DeAmicis, Carl V, Johnson, Peter L, Klosin, Jerzy, Whiteker, Gregory T, Srinivas Rao, C, Dai, Donghua

“…BACKGROUND: Tricyclazole is a commercial fungicide used to control rice blast. As part of re‐registration activities, samples of metabolites and process…”
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