Reddy, Raju Jannapu published the artcileMetal-free, highly regioselective sulfonylation of NH-1,2,3-triazoles with sodium sulfinates and thiosulfonates, Recommanded Product: 1,2-Dimethoxy-4-(2-nitrovinyl)benzene, the publication is Tetrahedron Letters (2018), 59(21), 2014-2017, database is CAplus.
A convenient and metal-free protocol for the highly regioselective sulfonylation of NH-1,2,3-triazoles such as 4-methyl-5-phenyl-2H-1,2,3-triazole, 4-furan-2-yl-5-methyl-2H-[1,2,3]triazole, 4-phenyl-2H-1,2,3-triazole, etc. was described. A range of readily accessible NH-1,2,3-triazoles was sulfonylated with various aryl sulfinates such as sodium p-toluenesulfinate, sodium 4-bromobenzenesulfinate, sodium benzenesulfinate, sodium 4-chlorobenzenesulfinate in the presence of mol. iodine. The scope was extended to thiosulfonates such as S-Ph 4-Me benzenesulfonothioate, S-Ph benzenesulfonothioate as an efficient sulfonylating agent and nitrochromene derived triazoles which were also explored for selective N-sulfonylation. A variety of synthetically viable N2-sulfonyl triazoles e.g., I was obtained in moderate to high yields with excellent regioselectivities via N-S bond construction under mild reaction conditions.
Tetrahedron Letters published new progress about 4230-93-7. 4230-93-7 belongs to catalysis-chemistry, auxiliary class Alkenyl,Nitro Compound,Benzene,Ether, name is 1,2-Dimethoxy-4-(2-nitrovinyl)benzene, and the molecular formula is C10H11NO4, Recommanded Product: 1,2-Dimethoxy-4-(2-nitrovinyl)benzene.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia