Process for the preparation of 2-halogeno-5-cyano pyridines

Details Process for the preparation of 2-halogeno-5-cyano pyridines Process for the preparation of 2-halogeno-5-cyano pyridines

1994-03-08

1995-10-17

Rotman, Alan L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

544124, 546193, 546281, 546286, C07D41304, C07D21309, C07D21384

Patent

active

054592739

ABSTRACT:
The title compounds of the formula ##STR1## can be prepared by reacting methylene-glutaconic acid dinitriles of the formula

REFERENCES:
patent: 4404388 (1983-09-01), Fah et al.
patent: 4678795 (1987-07-01), Shiokawa et al.
patent: 4738924 (1988-04-01), Kulla et al.
patent: 4774247 (1988-09-01), Shiokawa et al.
patent: 4812571 (1989-03-01), Shiokawa et al.
Chemical Abstract; 27-Heterocycles, p. 639, vol. 103, 1985; CA#71193W: "2-Chloronicotinic acid", F. Nagy et al.
Chemical Abstract, p. 742, vol. 111, 1989; CA#57553x: "Preparation of .alpha.-halopyridine derivatives by photochemical halogenation", K. Suzuki et al.
Y. Hiroshi et al, "Site selectivity in the reaction of 3-substituted pyridine 1-oxides with phosphoryl chloride", Chem. Abstr. 192171r, V. 110, No. 21, (1989) p. 685.

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