| 摘要 |
The present invention provides a process for producing the pyridine compound ÄdÜ: <CHEM> Äwherein R<3> and R<4> are as defined belowÜ, which has an excellent herbicidal activity, by making a pyridine compound ÄaÜ: <CHEM> Äwherein R<1> represents a C1-C6 alkoxy group, R<3> represents a halogen atom, cyano group or nitro group, and R<4> represents a hydrogen atom or halogen atomÜ react with an alpha -diazoester compound ÄfÜ: N2CHCOR<1> Äwherein R<1> is defined aboveÜ in the presence of an acid. |
