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DOI: 10.1055/s-2006-926446
Simple, Convenient and Heterogeneous Method for Conversion of Urazoles to Triazolinediones Using N,N,N′,N′-Tetrabromobenzene-1,3-disulfonylamide or Trichloromelamine under Mild and Heterogeneous Conditions
Publication History
Publication Date:
21 April 2006 (online)
Abstract
N,N,N′,N′-Tetrabromobenzene-1,3-disulfonylamide (TBBDA) or trichloromelamine (TCM) were used as effective oxidizing agents for the oxidation of urazoles and bisurazoles to their corresponding triazolinediones under mild and heterogeneous conditions at room temperature with excellent yields.
Key words
N,N,N′,N′-tetrabromobenzene-1,3-disulfonylamide - trichloromelamine - urazoles - bisurazoles - triazolinediones
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References
These compounds are sensitive to light, heat, alcohols, ethers, transition metals, and any nucleophiles. Also, they are very volatile - if the temperature rises over 50 °C in the course of removing of CH2Cl2, some TADs are removed with the solvent simultaneously. Therefore, the temperature must be controlled and CH2Cl2 is the best solvent for this purpose.