A Regioselective Synthesis of 2,4-Disubstituted 2H‑1,2,3-Triazoles by Coupling of N‑Tosylhydrazones and Anhydro-Aldose Tosylhydrazones with 4‑Substituted 1H‑1,2,3-Triazoles - Scope and Limitations
In this paper we present the first investigation of the C–N coupling reaction between N-tosylhydrazones including O-peracylated 2,6-anhydro-aldose tosylhydrazones and 1H-1,2,3-triazoles under catalyst-free conditions. This transformation is characterized by relatively mild thermal conditions, high regioselectivity in favor of 2,4-disubstituted 2H-1,2,3-triazoles and broad functional group tolera
