Patent · US Expired

Phenylpropanals

US4113781A · kind A · utility

13Cited by

4References

1Claims

0Family size

Assignee

BASF SE

Inventors

Werner Aquila · Mannheim, DE
Werner Hoffmann · Ludwigshafen, DE
Walter Himmele · Monsheim, DE
Hardo Siegel · Speyer, DE

Key dates

Filing date	Aug 5, 1974
Grant date	Sep 12, 1978
Priority date	—
Expiry date	Aug 5, 1994

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/582
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Substituted phenylpropanals and a process for their manufacture by reaction of the corresponding phenylethenes with carbon monoxide and hydrogen at temperatures of from 50.degree. to 180.degree. C and pressures of from 20 to 1,500 atmospheres gauge, in the presence of rhodium carbonyl complexes. The phenylpropanals according to the invention have pleasant scents. 3-(4-Isopropyl-phenyl)-butanal-1 and 3-(4-tert.-butyl-phenyl)-butanal-1, in particular, have suitable scents for the preparation of flower oil. They are also valuable starting materials for synthesizing drugs, plant protection agents and dyes.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.