Number | Date | Country | Kind |
---|---|---|---|
76 03604 | Feb 1976 | FR | |
76 38901 | Dec 1976 | FR |
Number | Date | Country |
---|---|---|
1526768 | Nov 1963 | FR |
Entry |
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The Chemistry of Heterocyclic Compounds, vol. 21, First Part, pp. 382-384, (1966). |
Bottcher et al., Chem. Ber. 84, pp. 458-463 (1951). |
Legrand et al., Bull. Soc. Chim. France, pp. 79-83 (1955). |
Patrick Joseph Brown, Chemical Abstracts, vol. 73, 3942b, (1970). |