Number | Name | Date | Kind |
---|---|---|---|
3243459 | O'Shea | Mar 1966 | |
3646110 | Eggensperger et al. | Feb 1972 | |
3736357 | Piasek et al. | May 1973 | |
4022836 | Hammen et al. | May 1977 | |
4054422 | Garth | Oct 1977 |
Entry |
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Houben-Weyl, "Methoden der Organischen Chemie", vol. 11, No. 1, pp. 259-261 (1957). |