Number | Date | Country | Kind |
---|---|---|---|
3603376 | Feb 1986 | DEX |
Number | Date | Country |
---|---|---|
48373 | Jan 1982 | EPX |
45394 | Jan 1982 | EPX |
162247 | Jan 1985 | EPX |
3209148 | Jan 1983 | DEX |
Entry |
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The Chemistry of Heterocyclic Compounds, vol. 22 (1967), pp. 41-49. |
Z. Chem. 14 (1974), p. 236. |
Katritzky, Advances in Heterocyclic Chemistry; Academic Press; N.Y., N.Y.; vol. 36, pp. 305-307. |