By Don R. Baker, Joseph G. Fenyes, George P. Lahm, Thomas P. Selby, Thomas M. Stevenson
This 30-chapter quantity is an entire reference ebook that comes with present updates and developments within the box of agrochemicals. themes within the e-book comprise herbicides in agriculture, regulate of bugs and acrids in agriculture, and keep an eye on of fungal ailment in agriculture.
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Extra resources for Synthesis and Chemistry of Agrochemicals VI
The strongly acidic media used in the nitration led to ester hydrolysis (15). Fischer esterification then gave 16. ; ACS Symposium Series; American Chemical Society: Washington, DC, 2001. 33 esterifîcation. Nitro reduction gave the key aniline intermediate 18. Two other important heterocyclic building blocks prepared were the isocyanate 19 and isothiocyanate 20, prepared from the treatment of 18 with phosgene and thiophosgene, respectively. From these building blocks, a select number of imide and isoimide-type heterocycles that have been reported in the protox literature were prepared to evaluate the structure-activity profile for this class.
Burdge, E . L . 2000, 56, 245-248. J. in The Pyrimidines, John Wiley & Sons, Inc. New York: 1994, pp. 188-193. Nielson, D . G. ; Rappoport, Z . ; John Wiley and Sons: New York: 1991, V o l 2, pp 427428 Schaefer, F. ; Peters, G. A. J. Org. Chem. 1961, 26, 412-418. I. Org. Chem. 1979, 44, 310-311. Brown, D . J. in The Pyrimidines, John Wiley & Sons, Inc. New York: 1994, pp. 461-462. ; Fujita, E. Synthesis, 1975, 276-277. Jacobsen N. ; Rose, S. E . Aust. J. Chem. 1985, 38, 1809-1813. ; Paul, H . Chem.
Optimization of the ester group was then carried out. The homologous series of alkyl bromoacetates (methyl to tert-butyl) was prepared. The isopropyl and ter/-butyl esters conferred the most activity. For convenience, subsequent structural modification utilized the isopropyl ester. Optimization of the cyclic imide moiety Preparation of the key intermediates for the various heterocyclyl phenyl cyanurates is shown in Figure 2. Benzamide 11 was converted to the urea 12 via a Hoffmann rearrangement.
Synthesis and Chemistry of Agrochemicals VI by Don R. Baker, Joseph G. Fenyes, George P. Lahm, Thomas P. Selby, Thomas M. Stevenson