Number | Date | Country | Kind |
---|---|---|---|
2537914 | Aug 1975 | DT |
Number | Name | Date | Kind |
---|---|---|---|
2857370 | Sundberg | Oct 1958 | |
2880219 | Burnette | Mar 1959 | |
2974153 | Gajewski | Mar 1961 | |
3234247 | Abend et al. | Feb 1966 |
Entry |
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Rabjohn, "Organic Synthesis," vol. IV, (1963), pp. 513-514. |