1. B. R. D. Whitear and D. J. Fry, British Patent 1,049,053, November 23, 1966.
2. The triazoles will be represented as their -one or -thione tautomers. The infrared spectra of 11a and 13, for example, revealed an intense band at 1720 cm−1.
3. D. J. Fry and A. J. Lambie, British Patent 741,228, November 30, 1955.
4. L. E. A. Godfrey and F. Kurzer, J. Chem. Soc., 5137 (1961).
5. Synthesis of 2-Alkoxy-1,3,4-thiadiazoles.