Nippon Kayaku Kabushiki Kaisha

Kabushikikaisha Kojundokagaku Kenkyusho

Hiroshi Matsumoto

Hidekimi Kadokura

Taizo Nakagawa

Shizuo Shimano

Kaoru Ohmori

Kengo Koike

Yoshinori Kuboshima

Yumie Okuhara

Masamichi Matsumoto

Tadashi Ishii

The invention provides true La(OiPr)preferable as a starting material for an asymmetric synthesis catalyst and a process for producing the same. In this process, anhydrous lanthanum chloride LaClis reacted with potassium isopropoxide K(OiPr) in a mixed solvent of isopropanol and toluene, then the isopropanol is distilled away to replace all the solvent by toluene, then the reaction solution is left, decanted and filtered to give a transparent filtrate, and the solvent is distilled away from the filtrate which is then vacuum-dried under heating, whereby high-purity La(OiPr)is obtained in 77% yield. In this high-purity La(OiPr), the La content is 97 to 103% of the theoretical content, impurity K is 0.3% or less, (Li+Na) is 0.01% or less, Cl is 0.2% or less, and the degree of association thereof is 5.5 to 6.5.

High-purity lanthanum isoproxide and a process for producing the same

A compound represented by the formula: ##STR1## wherein R.sub.1 is hydrogen, acetyl or alkoxycarbonyl having 1-3 carbon atoms of the alkoxy, R.sub.2 is alkyl having 1-12 carbon atoms, alkoxycarbonylmethyl having 1-12 carbon atoms of the alkoxy, benzyl, 2-pyridyl, cyclohexyl phenyl or phenyl substituted by one or two members selected from the group consisting of alkyl having 1-3 carbon atoms, halogen and nitro, and n is 0 or 1, with the proviso that when n is one, R.sub.1 represents acetyl exclusively, and use thereof as a fungicide.

2-Hydroxy benzamide derivatives and use thereof as a fungicide

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Ageo, Japan

Hiroshi Matsumoto