90433-08-2Relevant articles and documents
Urea mediated 5-substituted-1H-tetrazole via [3?+?2] cycloaddition of nitriles and sodium azide
Yakambram,Jaya Shree,Srinivasula Reddy,Satyanarayana,Naveen,Bandichhor, Rakeshwar
supporting information, p. 445 - 449 (2018/01/03)
A simple, new and convenient metal free procedure for the synthesis of 5-substituted 1H-tetrazoles using various nitriles and sodium azide in the presence of urea and acetic acid with good to high yields is developed. The reaction plausibly proceeds through in situ formation of urea azide active complex without toxic and/or expensive metal catalysts.
Facile synthesis of 5-substituted 1H-tetrazoles catalyzed by tetrabutylammonium hydrogen sulfate in water
Wang, Zengtao,Liu, Zhiguo,Cheon, Seung Hoon
, p. 198 - 202 (2015/03/03)
Facile synthesis of 5-substituted 1H-tetrazoles was achieved by treating nitriles with NaN3 in water or toluene in the presence of tetrabutylammoniumhydrogen sulfate (TBAHS). The reaction could be carried out in water as well as in toluene. The
PHARMACEUTICAL PREPARATIONS COMPRISING INSULIN, ZINC IONS AND A ZINC-BINDING LIGAND
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Page/Page column 327, (2008/06/13)
Novel preparations comprising branched ligands for the HisB10 Zn2+ sites of the R-state insulin hexamer. The preparations have a prolonged action designed for flexible injection regimes.