Superior catalysts for preparation of 3-amino-2,2,4,4-tetramethylthietane via the Leuckart reaction
US4851548A · kind A · utility
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6Claims
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Key dates
| Filing date | Apr 12, 1988 |
| Grant date | Jul 25, 1989 |
| Priority date | — |
| Expiry date | Apr 12, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D331/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Boric acid or aluminum salts, especially aluminum chloride, aluminum sulfate and aluminum nitrate and hydrates of said salts, are superior catalysts for preparation of 3-amino-2,2,4,4-tetramethylthietane via the Leuckart reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.