Process for the O-alkylation of N-(hydroxy)aralkylphenylethanola

Details Process for the O-alkylation of N-(hydroxy)aralkylphenylethanola Process for the O-alkylation of N-(hydroxy)aralkylphenylethanola

1990-03-05

1991-08-20

Gray, Bruce

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

560 28, C07C76100

Patent

active

050416065

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.

REFERENCES:
patent: 3781328 (1973-12-01), Witte et al.
patent: 4275219 (1981-06-01), Fupan
patent: 4338333 (1982-07-01), Aimsworth
patent: 4382958 (1983-04-01), Duckworth
patent: 4707497 (1987-11-01), Cecchi et al.
patent: 4968679 (1990-11-01), Junge et al.

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