Number | Name | Date | Kind |
---|---|---|---|
2022182 | Britton et al. | Nov 1935 | |
2248635 | Marple et al. | Jul 1941 | |
2756242 | Riener | Jul 1956 | |
2860146 | Furman et al. | Nov 1958 | |
3388078 | Evans et al. | Jun 1968 | |
4261906 | Renga et al. | Apr 1981 |
Number | Date | Country |
---|---|---|
57-026677 | Feb 1982 | JPX |
193478 | Mar 1967 | SUX |
Entry |
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CA 59:7491c; 64:1958g; 88:37242y; 92:110822b; 71:81124j; 59:12643e; 67:11425b; 70:68112p. |
Carl R. Noller, Chemistry of Organic Compounds (1965) 3rd Ed., pp. 332-333. |
A. Weissberger, Heterocyclic Compounds with Three- and Four-Membered Rings, Part One (1964) pp. 94-98. |