Concepedia

A Novel Synthetic Route to 2-Aryl-2H-Benzotriazole 1-Oxides

H.‐J. NICLAS, B. Göhrmann

Synthetic Communications · 1989 · 18 citations · 7 references

DOI

Concepts

Abstract

Abstract The reaction of benzofuroxan 1 with sodium or potassium salts of formanilides 2 affords 2-aryl-2H-benzotriazole 1-oxides 3 in moderate to good yields. By heating the reactants in toluene or DMSO formal O/N exchange with elimination of alkali formate takes place.

References

7

BENZOFURAZAN OXIDE

Organic Syntheses · 1957 · 31 citations

The Alkylation of Ambident Anions. IV. The Alkali Metal and Silver Salts of Formanilides

Allan R. Stein, See-Hua Tan · Canadian Journal of Chemistry · 1974 · 17 citations · Full text

, , +15

Preparation of 2-(2<i>H</i>-Benzotriazol-2-yl)phenols by the Reduction of 2-[(2-Nitrophenyl)azo]phenols with Thiourea<i>S,S</i>-Dioxide

Shigeo Tanimoto, Takayoshi Kamano · Synthesis · 1986 · 15 citations

, , +2

Reactions of benzofurazan oxide with amines—I

Musa Z. Nazer, C. H. ISSIDORIDES, Makhluf J. Haddadin · Tetrahedron · 1979 · 15 citations

, , +8

The reduction of some o-Nitrophenylazo dyes with thiourea S,S-Dioxide (Formamidinesulfinic acid): a general synthesis of 2-Aryl-2H-benzotriazoles and their 1-Oxides

J Rosevear, JFK Wilshire · Australian Journal of Chemistry · 1984 · 14 citations

, , +8