Number | Name | Date | Kind |
---|---|---|---|
3927080 | Gaertner | Dec 1975 | |
3969398 | Hershman | Jul 1976 | |
4065491 | Pfliegel et al. | Dec 1977 | |
4140791 | Chan | Feb 1979 | |
4237065 | Ehrat | Dec 1980 | |
4400330 | Wong et al. | Aug 1983 |
Number | Date | Country |
---|---|---|
0055695 | Jul 1982 | EPX |
Entry |
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Sut et al., "N-Monoalkylation of Some 2-Oxo and 2,5 Diketopiperazines", Chimie Therapeutique, 4 (3), 167-173 (1969). |
Okawara et al., "Convenient Syntheses of Piperazine-2,5-Diones and Lactams from Halocarboxamides Using Phase Transfer Catalysts". |
Chemistry Letters, 1981, pp. 185-188. |
Cavicchioni et al., "Base-promoted Reactions of .alpha.Halogenoalkylanilides", J. Chem. Soc. Perkin Trans. I, pp. 2969-2972 (1982). |