Process for preparation of biphenyl derivatives
US5760220A · kind A · utility
16Cited by
3References
46Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1996 |
| Grant date | Jun 2, 1998 |
| Priority date | — |
| Expiry date | Jun 4, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process is described for preparing a compound of the formula I: ##STR1## or a salt thereof; wherein X is a protecting group and R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently hydrogen, C.sub.1-6 alkyl or C.sub.1-6 perfluoroalkyl, R.sub.5 is hydrogen or when n is 1 R.sub.5 taken together with R.sub.3 comprises a double bond; m is 1, 2 or 3; n is 0 or 1, and p is 0, 1 or 2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.