Catalyzed alkylation of halopyridinates

Details Catalyzed alkylation of halopyridinates Catalyzed alkylation of halopyridinates

1974-12-23

1976-07-13

Drezin, Norman A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D21326

Patent

active

039693600

ABSTRACT:
The reaction between the alkali metal halopyridinates with the lower alkyl esters of .alpha.-chloro or bromo acetic acid (or propionic acid) to form the corresponding O-alkylated halopyridinates is catalyzed by quaternary ammonium salts. For example, methyl .alpha.-(6-chloropyridinyloxy)acetate was prepared in excellent yield by reacting sodium 6-chloropyridinate with excess methyl .alpha.-chloroacetate in the presence of 2 mole percent of benzyl triethyl ammonium chloride.

REFERENCES:
patent: 3609158 (1971-09-01), Torba
patent: 3755339 (1973-08-01), McKendry
patent: 3761486 (1973-09-01), McGregor
patent: 3862952 (1975-01-01), Markley
patent: 3883541 (1975-05-01), Hamilton

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