The last century represents an exciting era for the chemical evolution of transition-metal
catalyzed reactions, 1–3 and among these, the chemistry of palladium, 4–6 ruthenium, 7–10 …

The C–N cross-coupling chemistry intensely developed since the late 1990s has supplied
synthesists with an overwhelming number of methods to effectively combine carbon and …

N–Aryl bond formation under copper catalysis has played a pivotal role and has been
extensively used as a key step in the total syntheses of several therapeutic molecules. The …

An efficient synthesis of a variety of [1, 2, 3] triazolo-[1, 5-a] quinoxalin-4 (5 H)-ones via a [3+
2] cyclization reaction by photoredox catalysis between quinoxalinones and hypervalent …

Copper (I)-catalyzed azide–alkyne cycloaddition (CuAAC) is an essential “click chemistry”
reaction that is widely used in chemical biology, medicinal chemistry and materials science …

Spiro [azetidine‐indolines] are important scaffolds in diverse bioactive compounds. Current
efforts to synthesize spiro [azetidine‐indolines] are limited to chiral spiro [azetidine‐2, 3 …

A copper (I)-catalyzed tandem CuAAC/alkynylation reaction of various alkynes, organic
azides, and bromoalkynes to provide rapid access to 5-alkynyl-1, 2, 3-triazoles has been …

The synthesis of chiral triazole-fused pyrazine scaffolds from readily available substrates in
a step-economical asymmetric catalytic way is highly appealing. We herein report that an …

Metalated triazoles are the key reactive intermediate of the current click reaction (CuAAC).
Bench-stable 5-stannyl triazoles are obtained by a copper-catalyzed interrupted click …

Summary of main observation and conclusion Herein, we report a practical protocol for the
synthesis of sulfur cycle fused 1, 2, 3‐triazoles through a copper (I)‐catalyzed tandem …