C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/260, 260/538
C07D 213/70 (2006.01) C07D 333/34 (2006.01)
Patent
CA 1216290
Abstract of the Disclosure The nucleophilic substitution upon unactivated monocyclic or polycyclic aromatic or heteroaromatic substrates bearing suitable leaving groups can be achieved by catalyzing the substitution of said leaving groups by an anionic nucleophile with a cyclic or acyclic polydentate chelating ligand. Specific products of this reaction can be used in preparing sulfonylurea herbicides.
427970
E. I. Du Pont de Nemours And Company
Mccallum Brooks & Co.
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