Number | Name | Date | Kind |
---|---|---|---|
3288846 | Irani | Nov 1966 | |
3567768 | Shen | Mar 1971 | |
3927080 | Gaertner | Dec 1975 | |
4009204 | Krueger et al. | Feb 1977 | |
4065491 | Pfiegel et al. | Dec 1977 | |
4140791 | Chen | Feb 1979 | |
4237065 | Ehrat | Dec 1980 | |
4400330 | Wong et al. | Aug 1983 | |
4442041 | Subramanian | Apr 1984 | |
4578224 | Bayer et al. | Mar 1986 |
Number | Date | Country |
---|---|---|
0055695 | Dec 1981 | EPX |
47-112 | Jan 1972 | JPX |
Entry |
---|
Wagner et al, "Synthetic Organic Chemistry" (1953), pp. 678 and 679. |
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 Piperazines-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). |