Triazoles are an important class of nitrogen heterocycles that have been widely used as building block for a variety of synthetic applications in different fields such as bioconjugation, 1, 2 material sciences, organic chemistry and medicinal chemistry. Given the importance of the triazoles, their synthesis has attracted attention. The thermal alkyne-azide cycloaddition is not regioselective leading to mixtures of 1,4-and 1,5-disubstituted 1,2,3-triazoles. The preparation of 1,2,3-triazoles became very valuable after the independent discoveries of Meldal's and Sharpless' groups that introduced the copper(I) accelerated Hüisgen 1,3-dipolar cycloaddition of alkynes and azides (CuAAC) (Scheme 1a). That regioselective reaction exclusively provides the 1,4-disubtituted products and it has been applied to a great extent. A catalytic alternative to CuAAC that provides as main product 1,5-disubstituted 1,2,3-triazoles is the ruthenium-catalyzed alkyne-azide cycloaddition (RuAAC), however, is not as selective as the copper counterpart. Beyond their wide applicability and proved selectivity, both CuAAC and RuAAC reactions are not suitable for obtaining 1H-1,2,3-triazole with substituents at the 4 and 5 positions. Scheme 1. Synthetic strategies for obtaining disubstituted 1,2,3-triazoles Disubstituted 1,2,3-triazoles has been pointed out as non-classical bioisosters. Indeed, the geometry, polarity and rigidity of the heterocycle has been useful to mimic peptide bonds and double bounds. There is consensus that a 1H-1,2,3-triazole act as a peptide bond analogous, because their structure holds a hydrogen bond donor and acceptor. Several amide bonds involved in biologically active substances have been replaced by 1,2,3-triazoles with tailor-made substituents. These particular features have made the 1H-1,2,3-triazole an attractive scaffold to develop new bioactive compounds and has incentivized the exploration of new synthetic methodologies. The Banert cascade is an efficient synthetic strategy to prepare 1H-1,2,3-triazoles from propargylic azides (Scheme 1b). Klaus Banert reported the first synthesis of substituted 1H-1,2,3-triazole via [3,3]-sigmatropic rearrangement in 1989. Then, Loren and Sharpless, following the tradition of affiliating important reactions with their discoverers, called to this reaction route the Banert cascade. Originally, the cascade was reported to proceed via [3,3]sigmatropic rearrangement of propargylic azides to afford short-lived allenyl azides (Scheme 2a).