Number | Name | Date | Kind |
---|---|---|---|
3637803 | Shen et al. | Jan 1972 | |
3779763 | Lau | Dec 1973 | |
4242519 | Tsuchihashi et al. | Dec 1980 | |
4741846 | Evans | May 1988 |
Number | Date | Country |
---|---|---|
46-00020 | Jan 1971 | JPX |
Entry |
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Philip T. S. Lau et al., J. Org. Chem., 28, 2763, (1963). |