Number | Date | Country | Kind |
---|---|---|---|
2832102 | Jul 1978 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3691234 | Kiefer et al. | Sep 1972 | |
3993772 | Pommer et al. | Nov 1976 | |
4013684 | Meckle et al. | Mar 1977 |
Entry |
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Houben-Weyl, Methoden der Organischen Chemie, vol. 7/4 (1968), pp. 234-236. |