Process for the preparation of phenylcarbamates
US7767843B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2006 |
| Grant date | Aug 3, 2010 |
| Priority date | — |
| Expiry date | Oct 3, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C269/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of aminoalkyl phenyl carbamate compounds of Formula I,wherein R1 and R2 independently are hydrogen or a C1-6 alkyl; R3 and R4 are the same or different and each is a C1-6 alkyl; or R3 and R4 together with the nitrogen to which they are attached form a cyclic three to eight membered ring, with or without a heteroatom like nitrogen or oxygen; R5 and R6 independently are hydrogen, linear, branched or cyclic C1-6 alkyl; or R5 and R6 together with the nitrogen to which they are attached form a cyclic three to eight membered ring, with or without a heteroatom like nitrogen or oxygen; the carbon centre designated “*” can be racemic or enantiomerically enriched in the (R)- or (S)- configuration; and pharmaceutically acceptable acid addition salts thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.