On March 3, 1998, Kanda, Yoichi; Saito, Koki; Sato, Tsutomu published a patent.Application of 90764-84-4 The title of the patent was Preparation of N-(phenylsulfonyl)picolinamides and herbicides containing them. And the patent contained the following:
Title compounds I [X = halo, C1-4 (halo)alkyl, C1-4 (halo)alkoxy, (C1-4 alkoxy)carbonyl, (di)(C1-4 alkyl)aminosulfonyl, C1-4 alkylthio, C1-4 alkylsulfinyl, C1-4 alkylsulfonyl, NO2; Y = halo, C1-4 (halo)alkyl, C1-4 (halo)alkoxy, C1-4 (halo)alkylthio, NH2, (di)(C1-4 alkyl)amino, (C1-4 alkoxy)(C1-4 alkyl), (C1-4 alkylthio)(C1-4 alkyl), NO2; m = 0-4; n = 0-5], useful as herbicides, are prepared by (A) condensation of picolinic acids II (R = H; Y, m = same as I) with XnC6H5-nSO2NH2 (III; X, n = same as I) or (B) reaction of II (R = C6H5-sZs; Z = halo, C1-4 alkyl, C1-4 alkoxy, NO2; s = 0-5) with III in the presence of bases. III (Xn = 2,6-Cl2) was treated with NaH in DMF and treated with II (R = Ph, Ym = 5-OMe-6-Cl) at 70° for 1 h to give 70.7% I (Xn = 2,6-Cl2, Ym = 5-OMe-6-Cl). Herbicidal activity of I was tested for 11 kinds of weeds. The experimental process involved the reaction of 4,6-Dimethoxypicolinic acid(cas: 90764-84-4).Application of 90764-84-4
The Article related to picolinamide phenylsulfonyl preparation herbicide, benzenesulfonamide amidation picolinic acid, Heterocyclic Compounds (One Hetero Atom): Pyridines and other aspects.Application of 90764-84-4