Pyridone compounds useful for producing pyridine compounds

Details Pyridone compounds useful for producing pyridine compounds Pyridone compounds useful for producing pyridine compounds

2007-05-29

2007-05-29

Rao, Deepak (Department: 1624)

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

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

Reexamination Certificate

active

11382354

ABSTRACT:
The present invention provides a process for producing the pyridine compound [d]:[wherein R3and R4are as defined below],which has an excellent herbicidal activity, by making a pyridine compound [a]:[wherein R1represents a C1–C6 alkoxy group, R3represents a halogen atom, cyano group or nitro group, and R4ρεπρεσεντσ α ηψδρογεν ατομ ορ ηαλογεν ατομ] ρεαχτ ωιτη αν α-diazoester compound [f]:in-line-formulae description="In-line Formulae" end="lead"?N2CHCOR1[f]in-line-formulae description="In-line Formulae" end="tail"?[wherein R1is defined above]in the presence of an acid.

REFERENCES:
patent: 4859229 (1989-08-01), Wenger
patent: 5008267 (1991-04-01), Katakami
patent: 6537948 (2003-03-01), Tohyama et al.
patent: 255047 (1998-02-01), None
patent: 1122244 (2001-08-01), None
patent: 98/41093 (1998-09-01), None
patent: 01/77084 (2001-10-01), None
M.P. Cava, “Pyridine Derivatives, II”, Journal of Organic Chemistry, vol. 23, No. 11, (1958).
Nishiyama, H., et al., “Reaction of Some Amides and Thioamides with Diazomethane Catalyzed by Silica Gel”, Tetrahedron Letters, No. 48, pp. 4671-4674 (1979).
Busch-Petersen, J., et al., “A Rhodium (II) Catalytic Approach to the Synthesis of Ethers of a Minor Component in a Tautomeric Set”, Organic Letters, vol. 2, No. 11, pp. 1641-1643 (2000).

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