Process for the O-alkylation of N-(hydroxy)aralkylphenylethanolamines
US5041606A · kind A · utility
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10Claims
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Key dates
| Filing date | Mar 5, 1990 |
| Grant date | Aug 20, 1991 |
| Priority date | — |
| Expiry date | Mar 5, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2602/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of a compound of formula ##STR1## wherein X represents hydrogen, halogen, trifluoromethyl or lower alkyl group; W represents methyl, Q represents hydrogen or W and Q, together, form an ethylene group and R' represents a lower alkyl group which comprises protecting the amino group of the phenol corresponding to the compound of formula I, submitting the compound thus obtained to an alkylation (with a compound of formula Hal--CH.sub.2 --COOR', wherein R' is as defined hereinabove for the formula I and Hal is chlorine, bromine or iodine) and then releasing the amino group of the product thus obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.