1. G. S. Kolesnikov, Synthesis of Vinyl Derivatives of Aromatic and Heterocyclic Compounds [in Russian], Moscow (1960), p. 244.
2. L. N. Filitis, T. V. Akalaeva, O. Yu. Amel'kin, et al., Khim.-farm. Zh.,22, No. 10, 1217 (1988).
3. V. I. Shvedov, L. B. Altukhova, and A. N. Grinev, Zh. Org. Khim.,2, 1608–1612 (1966).
4. P. R. Dua and B. N. Dhawan, J. Med. Chem.,16, 425–427 (1973).
5. R. C. Effland, G. C. Hesley, and J. J. Tegeler, J. Heterocycl. Chem.,19, 537–539 (1982).