Тиетанильная защита в синтезе 5-арилокси (сульфонил) -3-бром-1,2,4-триазолов

Дата публикации: 2018

DOI: 10.1134/S1070428018120242

Издатель: MAIK NAUKA/INTERPERIODICA/SPRINGER, 233 SPRING ST, NEW YORK, NY 10013-1578 USA

Тип: Article



Thietanyl Protection in the Synthesis of 5-Aryloxy(sulfonyl)-3-bromo-1,2,4-triazoles

Publication date: 2018

DOI: 10.1134/S1070428018120242

Abstract:

Previously unknown 5-aryloxy- and 5-benzenesulfonyl-3-bromo-1H-1,2,4-triazoles have been synthesized starting from 3,5-dibromo-1,2,4-triazole by successive alkylation with 2-chloromethylthiirane, nucleophilic substitution of the 5-bromine atom by phenoxy or phenylsulfanyl group, oxidation of the thietane sulfur atom with hydrogen peroxide, and removal of the thietanyl protecting group by treatment with sodium ethoxide.

Издатель: MAIK NAUKA/INTERPERIODICA/SPRINGER, 233 SPRING ST, NEW YORK, NY 10013-1578 USA

Тип: Article