Number | Date | Country | Kind |
---|---|---|---|
4215592 | May 1992 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
2998450 | Wilbert et al. | Aug 1961 | |
3917695 | Schulman et al. | Nov 1975 | |
5059623 | Kruger et al. | Oct 1991 |
Number | Date | Country |
---|---|---|
0339418 | Nov 1989 | EPX |
Entry |
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Methoden Der Organischen Chemie, (Houben-Weyl) Bd. VI/1C, 1976, Stuttgard, pp. 91-101. |