A visible-light-promoted regioselective coupling of C(sp 3 )-H of aryl-2H-azirine and (diacetoxy)iodobenzene has been reported. Rose Bengal as an organophotoredox catalyst has been used in this reaction. The reaction proceeds under aerobic condition at room temperature. A variety of aryl-2H-azirines gives the corresponding acyloxylated azirines under this reaction conditions. The reaction goes through a radical pathway. The protocol is also applicable on gram-scale synthesis.

In recent years several important viral infections have emerged and antiviral chemotherapeutic agents are not sufficiently effective in clinic, leading to serious human diseases and mortality. Therefore, novel antiviral candidates are urgently desirable, which undoubtedly is essential for the therapy of various fatal and debilitating viral infections. Heterocyclic compounds are obtaining importance in the field of medicinal chemistry because of the broad spectrum of their physiological activities. Among N- and S-containing heterocycles, indole, imidazole, thiazole, pyridine, and quinaxoline derivatives are especially attractive. The present review highlights antiviral behavior of these heterocyclic compounds.

A simple and efficient method has been developed to synthesize 1‐oxa‐4‐aza‐spirooxazolines. The reaction was carried out at room temperature using rose bengal as an organic photoredox catalyst and blue LED as a light source. It was observed that quinones underwent spiroannulation reaction with vinyl azide on C−O double bond instead of C−C double bond through which various corresponding 1‐oxa‐4‐aza‐spirooxazolines have been synthesized in good to excellent yields.

A rapid and effective method has been established for the synthesis of N-acylated α-aminoketone derivatives by the reaction of 3-aryl-2H-azirines and highly substituted 2-Me/Ph-3-aryl-2H-azirines with various carboxylic acids under ambient air within 10 min at room temperature. N-Trifluoroacetylated α-aminoketones with different substituents have been reported in the presence of trifluoroacetic acid. This protocol is equally effective to synthesize N-formylated α-aminoketone and N-hydroxymethylated formamide derivatives.

We have developed a convenient method to synthesize tertiary amines selectively with a variety of aldehydes and primary amines using commercially available formic acid as reducing agent. In our methodology we have shown that we can prepare a variety of tertiary amines by changing both the amines as well as aldehydes. Clean reaction, operational simplicity, easily accessible reactants, metal and solvent‐free and environmentally friendly reaction conditions are the notable advantages of this procedure.