Patent ID: 7067668

Claim:
A 4-quinolinol compound represented by the formula (I): or an agricultural and horticulturally acceptable acid addition salt thereof, wherein R 1 represents an alkali metal, an alkaline earth metal, or COR 4 in which R 4 is a hydrogen atom, an optionally substituted C1–C18 alkyl group, an optionally substituted C2–C18 alkenyl group, an optionally substituted C3–C10 cycloalkyl group, an optionally substituted phenyl C1–C4 alkyl group, an optionally substituted phenoxy C1–C4 alkyl group, an optionally substituted aryl group, OR 5 in which R 5 is an optionally substituted C1–C4 alkyl group, an optionally substituted aryl group, an optionally substituted heterocycle, an optionally substituted phenyl C1–C4 alkyl group or an optionally substituted phenoxy C1–C4 alkyl group, or NR 6 R 7 in which R 6 and R 7 are each a hydrogen atom, an optionally substituted C1–C6 alkyl group or an optionally substituted phenyl group, or R 1 and R 7 together with N may form a four- to six-membered ring containing one or two heteroatoms; R 2 represents an optionally substituted C1–C4 alkyl group; R 3 represents an optionally substituted C1–C18 alkyl group; and W represents 1 to 4 substituents on the nucleus which may be identical or different and each of which is an optionally substituted C2–C4 alkenyl group, an optionally substituted C2–C4 alkynyl group, an optionally substituted C3–C10 cycloalkyl group, an optionally substituted aryl group, an optionally substituted aryloxy group, NR 8 R 9 in which R 8 and R 9 are each a hydrogen atom, an optionally substituted C1–C6 alkyl group or an optionally substituted phenyl group, or R 1 and R 9 together with N may form a four- to six-membered ring containing one or two heteroatoms, COR 10 in which R 10 is a hydrogen atom, an optionally substituted C1–C4 alkyl group or an optionally substituted C2–C4 alkenyl group, COOR 11 in which R 11 is a hydrogen atom, an optionally substituted C1–C4 alkyl group or an optionally substituted C2–C4 alkenyl group, a nitro group, or a cyano group; wherein when optionally substituents present, the optional group is selected from the group consisting of halogen, C1–C4 alkyl group, C1–C4 alkoxy group and hydroxyl.