Sumitomo Chemical Company, Limited

Agency of Industrial Science and Technology

Shuzo Nakamura

Tsuneyuki Nagase

Yukio Yoneyoshi

Tadatoshi Aratani

Hiroshi Sato

Masaru Ishino

Hiroshi Ichihashi

Keisuke Wada

Mitsuhisa Tamura

Yoshinori Hara

Eiichi Watanabe

Takashi Deguchi

Koichi Nagai

Yoshihiko Nagaoka

Kenji Murayama

Hiroo Tanaka

A process for producing aliphatic alcohols by reacting carbon monoxide and hydrogen in a liquid phase in the presence of catalyst components, characterized in that rhodium and a trialkylphosphine represented by the general formula PR.sub.1 R.sub.2 R.sub.3 where each of R.sub.1, R.sub.2 and R.sub.3 is a primary alkyl group, a secondary alkyl group, a tertiary alkyl group or a cycloalkyl group, are used as the catalyst components.

Process for producing aliphatic alcohols

Benzene is efficiently nitrated in gaseous phase with NO.sub.2 or N.sub.2 O.sub.4 in the presence of a catalyst of acidic mixed oxide containing two or more sorts of metal oxides, for example, MoO.sub.3 --WO.sub.3, MoO.sub.3 --TiO.sub.2, WO.sub.3 --TiO.sub.2, TiO.sub.2 --ZnO or TiO.sub.2 --SiO.sub.2.

Process for nitration of benzene

In the production of methacrolein by vapor phase catalytic oxidation of isobutylene and/or t-butyl alcohol, an improved process for suppressing the amount of acetone to be by-produced which comprises contacting a gaseous mixture comprising isobutylene or t-butyl alcohol, molecular oxygen and steam with a metal oxide catalyst composition comprising molybdenum and bismuth as the essential metal components, the amount of steam in the gaseous mixture being kept to be not more than 4 mol per mol of isobutylene or not more than 3 mol per mol of t-butyl alcohol.

Production of methacrolein

Process for producing an optically active alkyl chrysanthemate by reacting 2,5-dimethyl-2,4-hexadiene with an alkyl diazoacetate in the presence of a copper complex coordinated with a particular Schiff base.

Asymmetric synthesis of alkyl chrysanthemates

A copper complex coordinated with a Schiff base is provided herein, which complex is especially advantageous to catalyze the asymmetric synthesis of alkyl chrysanthemates. The specific complex of the present invention is a copper complex coordinated with a chiral Schiff base of the formula: ##STR1## wherein C* is an asymmetric carbon atom, R.sup.1 is selected from (a) alkyl groups whose carbon atom number is 1-10, and (b) aralkyl groups with or without alkoxy substituent(s), whose total carbon atom number is 7-20, R.sup.2 is selected from aryl groups with alkoxy substituent(s), whose total carbon atom number is 7-30, X is selected from (a) hydrogen, (b) alkyl groups having 1-10 carbon atoms, (c) a phenyl group, (d) alkoxy groups having 1-10 carbon atoms, (e) halogen atoms, (f) nitro, or X is benzo which together with the ring to which it is attached forms a naphthalene ring, and Y is a hydrogen atom.

Copper complex

Growing community of inventors

Takatsuki, Japan

Shuzo Nakamura