Number | Date | Country | Kind |
---|---|---|---|
79 18357 | Jul 1979 | FRX |
Number | Name | Date | Kind |
---|---|---|---|
2876220 | Robertson | Mar 1959 | |
4144341 | Clark et al. | Mar 1979 |
Number | Date | Country |
---|---|---|
2630764 | Jan 1977 | DEX |
Entry |
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Wagner et al., Synthetic Organic Chemistry; John Wiley & Sons, New York, N.Y., 1953, pp. 728-729. |