Number | Date | Country | Kind |
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29365/75 | Jul 1975 | UK |
Number | Name | Date | Kind |
---|---|---|---|
B560717 | Wilson et al. | Feb 1976 | |
3958030 | Wilson et al. | May 1976 |
Number | Date | Country |
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623330 | Jul 1961 | CA |
Entry |
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Houben-Weyl, Methoden der Organischem Chemie, vol. 1X (1955) pp. 704, 720 and 721. |