Toa Nenryo Kogyo Kabushiki Kaisha

Yoshihisa Matsushima

Katsumi Kaneko

Tadamori Sakakibara

Shozo Wada

Nobukazu Okamoto

Yukio Nagashima

Yohio Ishii

Takashi Koyano

Yoshio Ishii

Tetsuo Kitamura

This invention relates to rhodium compounds having the general formula:

Process for producing rhodium compounds

Described is an olefin hydroformylation process for producing aldehydes utilizing a Pt Group IV-A organometallic catalyst mixture such as (PPh.sub.3).sub.2 PtPh-SnPh.sub.2 Cl/SnCl.sub.2. High yields of aldehydes are produced in high selectivity for the normal isomer, especially when using propylene as the olefin.

Process for producing aldehydes

Novel rhodium compounds and process for producing the same

In an oxo process wherein an olefin is caused to react with carbon monoxide and hydrogen, a rhodium catalyst is provided by carrying out the hydroformylation in the presence of a rhodium source and free mixed ligands comprising a tertiary organo phosphorus and tertiary organo arsenic in excess of the quantity required for coordination to the rhodium atom. For example, HRh(CO)(PPh.sub.3).sub.3 with excess AsPh.sub.3 /PPh.sub.3 may be used to give a high reaction rate and good selectivity to n-aldehyde.

Process for the production of aldehydes by hydroformylation

A novel catalytic composition is described, useful for treating olefins or alcohols with carbon monoxide in the preparation of carboxylic acids comprising a solution containing copper carbonyl and a hydrated boron fluoride which optionally may contain a mineral acid such as sulfuric acid, phosphoric acid or hydrogen fluoride. The copper carbonyl functions as a co-catalyst for the hydrated boron trifluoride to enhance selectivity. The catalysts are especially suited for the preparation of neo acids.

Copper carbonyl-containing catalytic solutions

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Ooi, Japan

Yoshihisa Matsushima