C10 dialdehyde, synthetic method thereof, and synthetic...

Details C10 dialdehyde, synthetic method thereof, and synthetic... C10 dialdehyde, synthetic method thereof, and synthetic...

2005-07-15

2008-12-30

Witherspoon, Sikarl A (Department: 1621)

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

Organic compounds

Oxygen containing

C568S494000, C585S351000

Reexamination Certificate

active

07470822

ABSTRACT:
The novel intermediate compound which can be efficiently utilized in the synthesis of carotenoid compounds based on the sulfone chemistry, the preparation method of the same, and the practical synthetic process for preparing β-carotene by the use of the above novel compound are disclosed. The synthesis of β-carotene is characterized by the double elimination reactions of the C40compound containing both the benzenesulfonyl group and the group X (either halogen or ether), which can be prepared by the coupling reaction of the novel C10dialdehyde with two equivalents of the C15allylic sulfone, followed by the functional group transformation of the resulting C40diol either to the corresponding halide or to the ether, to produce the fully conjugated polyene chain.

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patent: 5276209 (1994-01-01), Jaedicke et al.
patent: 6297416 (2001-10-01), Koo et al.
patent: 0523534 (1993-01-01), None
International Search Report for PCT/KR2005/002273.

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