3-(dihydro(tetrahydro)isoquinolin-1-yl)quinolines

Abstract

The invention provides compounds which exert excellent fungicidal activities against various plant diseases and are useful as active ingredients of pesticides permitting the control of rice blast and so on even in low dosages. Compounds represented by the general formula wherein R<1> and R<2> are each C1-6 alkyl or the like; R<3> and R<4> are each hydrogen, halogeno, or the like; R<5> is hydrogen, C1-6 alkyl, or the like; X is halogeno, C1-6 alkyl, or the like; Y is halogeno, C1-6 alkyl, or the like; n is an integer of 0 to 4; and m is an integer of 0 to 6.

Description

technical field

[0001] The present invention relates to 3-(dihydro(tetrahydro)isoquinolin-1-yl)quinoline compounds or salts thereof and agricultural chemicals containing them as active ingredients. Background technique

[0002] In International Publication Pamphlet No. 00 / 42019 and International Publication Pamphlet No. 02 / 06270, 6-arylphenanthridine that forms a cyclohexane ring between the 3-position and 4-position of the dihydroisoquinoline ring is described The compound is used as a PDE4 inhibitor. In addition, in Japanese Patent Laid-Open No. 2003 / 171381, it is described that 6-arylfuran isoquinoline in which a dihydrofuran ring is formed between the 7-position and 8-position of the dihydroisoquinoline ring compound as an entry inhibitor, however, there is no description of a 3-dihydroisoquinolin-1-ylquinoline compound in which the isoquinoline ring is not condensed with other rings, and there is no description of an agricultural and horticultural fungicide either. In ...

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