Number | Name | Date | Kind |
---|---|---|---|
4152352 | Perron | May 1979 | |
4351952 | Foa | Sep 1982 | |
4492798 | Lee | Jan 1985 | |
4518800 | Schouteeten | May 1985 | |
4689431 | Tanaka | Aug 1987 |
Number | Date | Country |
---|---|---|
1043136 | Jan 1986 | JPX |
Entry |
---|
Herbst, R. M. et al. Org. Syn. Coll. 3 1943, pp. 519-520. |