Number | Date | Country | Kind |
---|---|---|---|
21929 A/75 | Apr 1975 | IT |
Number | Name | Date | Kind |
---|---|---|---|
2589296 | Schroeder | Mar 1952 | |
2872378 | Manchey et al. | Feb 1959 | |
3812261 | Hartmann | May 1974 | |
3996376 | Hartmann | Dec 1976 |
Entry |
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Theilheimer, Synthetic Methods of Organic Chemistry, vol. 16, abstract 612. |