Number | Date | Country | Kind |
---|---|---|---|
21071A/90 | Jul 1990 | ITX |
Number | Name | Date | Kind |
---|---|---|---|
3673247 | Hill, Jr. et al. | Jun 1972 | |
4056568 | Cisneg | Nov 1977 | |
4625000 | Chao et al. | Nov 1986 |
Number | Date | Country |
---|---|---|
0190685 | Aug 1986 | EPX |
0275952 | Jul 1988 | EPX |
Entry |
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Tetrahedron Letters, vol. 21, pp. 1235-1238, Pergamon Press GB 1980, "Direct Reduction of Sulfonic Acid to the . . . "(Numata). |
Tetrahedron Letters, vol. 21, pp. 4921-2924, Pergamon . . . UK, (1980) "Iodine Catalyzed reduction of Arenesulfonic . . . " (Fujimori). |
Bull. Chem. Soc. Jpn. 56, 3802-3812 (1983) vol. 56, No. 12 "Reduction of Sulfonic Acids and Related Organosulfur . . . " (OAE). |
Voronkov, M. G. et al., "Synthesis", (1982) p. 277-280. |