Process for producing 6-phenoxypicolinic aldehydes

Details Process for producing 6-phenoxypicolinic aldehydes Process for producing 6-phenoxypicolinic aldehydes

1981-10-26

1983-07-12

Jiles, Henry R.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546302, 546303, C07D21364

Patent

active

043932134

ABSTRACT:
A process for producing 6-phenoxypicolinic aldehydes, which comprises reacting a 2-halogeno-6-phenoxypyridine represented by the general formula I: ##STR1## where X is a halogen atom, Y is independently an alkyl group of 1 to 4 carbon atoms, an alkoxy group of 1 to 4 carbon atoms, an alkoxy group of 1 to 4 carbon atoms substituted by a halogen atom, an alkylthio group of 1 to 4 carbon atoms, a trifluoromethyl group, a fluorine atom or a chlorine atom, Z is a hydrogen atom or a fluorine atom, and n is an integer of 0 to 2, with magnesium metal, and then with a formylating reagent. These compounds are used as intermediates for the synthesis of insecticides.

REFERENCES:
patent: 4281133 (1979-11-01), Malhotra et al.
Fieser et al., Reagents for Organic Synthesis, John Wiley (1967) pp. 1204-1205.
Sharefkin et al., Analytical Chem. vol. 35, No. 11, (Oct. 1963), pp. 1616-1620.
Heinert et al., Tetrahedron (1958), vol. 3, pp. 49 and 50.
Schofield, Hetero-Aromatic Nitrogen Compounds-Pyrroles and Pyridines-Butterworths Pub. Co. 1967, p. 371.

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