Process for the recycle of a waste product of diltiazem synthesis
US6114523A · kind A · utility
1Cited by
4References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 21, 1998 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | Oct 21, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C319/20
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process which allows the re-use of compounds of formula ##STR1## in diltiazem synthesis through a process of conversion to a mixture of enantiomers III-(2R,3R) and III-(2S,3S) is described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.