Synthesis of 2-Substituted Isothiazolo[5,4-b]pyridin-3(2H)-one 1,1-Dioxides
摘要:
The Isothiazolo[5,4-b]pyridin-3(2H)-one 1,1-dioxides (3a - g) were prepared from the corresponding isothiazolo[5,4-b]pyridin-3(2H)-ones (1a - g) by means of an oxidation with oxone(R) (KHSO5) and sodium hypochlorite (NaOCl) in two steps. The influence of the substituents (R), in position 2 of this system, on the oxidation process was studied. While the oxidation of 1a - g with 3-chloroperoxybenzoic acid gave yields of 3a - g depending greatly on the nature of R, the combined KHSO5/NaOCl method gave good yields of 3a - g in all of the cases studied.
Synthesis of 2-Substituted Isothiazolo[5,4-b]pyridin-3(2H)-one 1,1-Dioxides
摘要:
The Isothiazolo[5,4-b]pyridin-3(2H)-one 1,1-dioxides (3a - g) were prepared from the corresponding isothiazolo[5,4-b]pyridin-3(2H)-ones (1a - g) by means of an oxidation with oxone(R) (KHSO5) and sodium hypochlorite (NaOCl) in two steps. The influence of the substituents (R), in position 2 of this system, on the oxidation process was studied. While the oxidation of 1a - g with 3-chloroperoxybenzoic acid gave yields of 3a - g depending greatly on the nature of R, the combined KHSO5/NaOCl method gave good yields of 3a - g in all of the cases studied.
Synthesis and Evaluation of New Ethyl 2,3- Dihydro-3-oxoisothiazolo[5,4-<i>b</i>]pyridine- 2-alkanoate Derivatives as Potential Herbicides
作者:Maria J. Gil、José M. Zabalza、Javier Navarro、Maria A. Mañú、Alberto González、Víctor Martínez Merino、Arantxa Canal、Mercedes Royuela、Pedro M. Aparicio-Tejo