Andrew Plant
Syngenta
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Publication
Featured researches published by Andrew Plant.
Science | 2013
Clemens Lamberth; Stephane Jeanmart; Torsten Luksch; Andrew Plant
Crop protection chemistry has come a long way from its “alchemic” beginnings in the late 19th century to a high-tech science that supports the sustainable production of food, feed, and fiber for a rapidly growing population. Cutting-edge developments in the design and synthesis of agrochemicals help to tackle today’s challenges of weed and pest resistance, higher regulatory safety margins, and higher cost of goods with the invention of selective, environmentally benign, low use rate, and cost-effective active ingredients.
Journal of the American Chemical Society | 2009
Duncan L. Browne; Jérôme F. Vivat; Andrew Plant; Enrique Gómez-Bengoa; Joseph P. A. Harrity
The cycloaddition of alkynylboronates and sydnones provides a convenient and highly regioselective method for the synthesis of a broad range of di-, tri-, and tetrasubstituted pyrazole boronic esters. The origins of an observed regiochemical divergence in the reactions of terminal alkynylboronates with their more substituted analogues have been studied by DFT methods.
Organic Letters | 2009
Olga García Mancheño; Jonathan W. P. Dallimore; Andrew Plant; Carsten Bolm
The challenging imination of benzyl-, sterically demanding alkyl-, and heteroaryl-substituted sulfoxides has been studied. Iron(II) triflate was identified as a highly efficient and robust catalyst for sulfur imination reactions. A variety of sulfoxides and sulfides were efficiently iminated with sulfonyliminoiodinanes (PhI=NSO(2)R) at room temperature to give the corresponding sulfoximines and sulfilimines in good yields and with short reaction times.
Journal of Organic Chemistry | 2010
Duncan L. Browne; John B. Taylor; Andrew Plant; Joseph P. A. Harrity
The cycloaddition of 4-iodosydnones with terminal alkynes proceeds with excellent regiocontrol to provide 5-iodo pyrazoles. These products participate smoothly in subsequent C-C and C-heteroatom bond forming processes.
Organic and Biomolecular Chemistry | 2006
Matthew D. Helm; Andrew Plant; Joseph P. A. Harrity
A series of 3,6-dichloro-1H-pyridazin-4-ones have been prepared via the cycloaddition of 3,6-dichlorotetrazine with alkynylboronates, and their employment as useful synthetic intermediates was highlighted through a selection of highly regioselective C-O, C-S and C-C bond forming reactions.
Journal of Organic Chemistry | 2009
Duncan L. Browne; John B. Taylor; Andrew Plant; Joseph P. A. Harrity
The application of a Suzuki cross coupling approach to a range of C-4 substituted sydnones from a 4-bromosydnone is described. Moreover, the potential of this approach to prepare a diverse range of pyrazoles is demonstrated.
Chimia | 2014
Chantal Belie; Jutta Elisabeth Boehmer; Eric Daniel Clarke; Anne Jacqueline Dalencon; Jonathan W. P. Dallimore; Martin Diggelmann; Myriem El Qacemi; Katharine Mary Ingram; Andy Knee; Tony Kozakiewicz; Adrian Longstaff; Derek Mccormack; Matthew McLachlan; Nick Mulholland; Andrew Plant; John Williams
An efficient synthesis of a difluorosulfone-containing herbicide has been achieved by selective reductive silylation of a symmetrical bis(trifluoromethyl)-1,2,3-triazole. Subsequently, a fluoride-induced reaction led to a difluoromethyl anion equivalent, which was reacted with a sulfur electrophile leading ultimately to the key difluorosulfide moiety.
Chemical Science | 2010
Stephen M. Goldup; David A. Leigh; Roy T. McBurney; Paul R. McGonigal; Andrew Plant
Angewandte Chemie | 2005
Matthew D. Helm; Jane E. Moore; Andrew Plant; Joseph P. A. Harrity
Angewandte Chemie | 2007
Duncan L. Browne; Matthew D. Helm; Andrew Plant; Joseph P. A. Harrity