Number | Date | Country | Kind |
---|---|---|---|
578/93 | Feb 1993 | CHX |
Number | Name | Date | Kind |
---|---|---|---|
3222374 | Chase | Dec 1965 | |
4026901 | Coffen | May 1977 | |
4093654 | Coffen | Jun 1978 | |
4255584 | Hoffmann-Paquotte | Mar 1981 | |
4772718 | Nosberger | Sep 1988 | |
5214162 | Nosberger | May 1993 |
Number | Date | Country |
---|---|---|
10697 | May 1980 | EPX |
492233 | Jul 1992 | EPX |
Entry |
---|
Olah, et al., Synthesis, 78: pp. 657-658 (1980). |