Preparation of germaazaspirodiones and germaazaspiranes
US4248785A · kind A · utility
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1References
26Claims
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Assignee
Inventors
Key dates
| Filing date | Apr 26, 1979 |
| Grant date | Feb 3, 1981 |
| Priority date | — |
| Expiry date | Apr 26, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/30
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel high purity crystalline forms of dialkylgermaazaspirodiones, their preparation and their use in an improved process for the preparation of high purity dialkylgermaazaspiranes and their acid addition salts is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.