Process to prepare tolterodine
US5922914A · kind A · utility
34Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1997 |
| Grant date | Jul 13, 1999 |
| Priority date | — |
| Expiry date | Dec 18, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C215/54
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a novel intermediate, 3,4-dihydro-6-methyl-4-phenyl-2H-benzopyran-2-ol (IV) ##STR1## and an improved process for the preparation of tolterodine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.