1. E. Brzezinska and A. L. Ternay, Jr.,J. Org. Chem., 1996,59, 8239.
2. K. B. Piotrovskii and Z. N. Tarasova,Starenie i stabilizatsiya sinteticheskikh kauchukov i vulkanizatorov [Aging and Stabilization of Synthetic Rubbers and Vulcanizers], Khimiya, Moscow, 1980 (in Russian).
3. V. I. Cohen,J. Heterocycl. Chem., 1979,16, 13.
4. Y. Meitey, S. Michaud, and M. Vierfond,Heterocycles, 1994,38, 1001.
5. L. W. Wattenberg, M. A. Page, and J. L. Leong,Cancer Res., 1968,28, 2539.