A silica supported sulfuric acid catalyzed [3+2] cycloaddition of nitriles and sodium azide to form 5-substituted 1H-tetrazoles is described. The protocol can provide a series of 5-substituted 1H-tetrazoles using silica sulfuric acid from nitriles and sodium azide in DMF in 72%-95% yield.

ABSTRAK
 Cabai besar merupakan salah satu tanaman hortikultura yang memiliki nilai ekonomi cukup tinggi di Indonesia. Harga cabai besar, sering kali mengalami kenaikan terutama pada saat hari besar. Salah dapat dilakukan untuk meningkatkan produktivitas yaitu dengan menghasilkan kultivar baru unggul. Hal menggunakan perlakuan mutasi. Perlakuan mutasi digunakan dalam penelitian ini kimia la...

Nucleophilic ring opening of dl and meso 1,1¢- dicyclohexenyl diepoxides by sodium azide in dioxane and aqueous alcoholic medium give the corresponding azidoalcohols. The obtention of departure diepoxides from diazidoalcohols by the reaction with sodium hydride shows the anti position of OH and N3 groups.

We report the polymerization of dopamine analogue 4-(2-azidoethyl)benzene-1,2-diol (dopamine azide), where amine group is switched to azide, resulting in particles stable water but, contrast other polycatechol based polymers, soluble organic solvents.

[reaction: see text]. We report the synthesis of cyclic sulfates by halocyclization. The resulting cyclic sulfate products can be opened selectively with sodium azide to transform them into highly functionalized compounds that contain azide, alcohol, and halide groups.

Medicinal plants are an important source of substances which are claimed to induce anti-inflammatory and antioxidant effects. The leaves of the olive tree (Oleaeur opaea) have been used for medicinal purposes since ancient times and research has suggested that olive leaf extracts have antimicrobial and antimutagenic properties. In this study, Olive leaf aqueous extracts were screened for their ...

in order to evaluate chemical mutation on cultivar mahali tarrom’ in salt stress, seeds of rice cultivar ‘mahali tarrom’ were treated with two chemical mutagens, ethyl methane sulfonate (14 mm) and sodium azide (two mm). in second generation, appropriate plants for economically important traits have been selected. seeding of selected plants were tested under salt stress in third generation usin...