Process for producing α,β-unsaturated aldehyde...

Details Process for producing α,β-unsaturated aldehyde... Process for producing α,β-unsaturated aldehyde...

2006-11-08

2010-06-08

Witherspoon, Sikarl A (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C568S463000, C568S862000

Reexamination Certificate

active

07732644

ABSTRACT:
The present invention relates to processes for producing α,β-unsaturated aldehyde compounds and unsaturated alcohols with a good yield. There is provided a process for producing and α,β-unsaturated aldehyde compound including the step of subjecting a raw aldehyde compound to an intermolecular condensation reaction in the presence of an amine and a protonic acid having 4 to 20 carbon atoms or a salt thereof; and a process for producing an unsaturated alcohol including the step of subjecting the α,β-unsaturated aldehyde compound to a reduction reaction.

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Ishikavva, et al.“Pyrrolidine Catalyzed Homo-Aldol Condensation Reactions of Aldehydes”, Synlett, vol. 4, pp. 450-452, XP002421842, (1999).
Lee et al., “Synthesis of Aliphalic Ketones from Allylic Alcohols through Consecutive Isomerization and Chelation-Assisted Hydroacylation by a Rhodium Catalyst”, J. Org.Chem., vol. 67, pp. 3945-3948, XP002421843, (2002).

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