Sulfone polyene intermediates

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...

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549342, 549369, 549370, 549375, 549415, 549420, 549421, 560 11, 560194, 562429, 568 28, 568 31, 568 32, 568 33, 568 34, C07D31772, C07C14708

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048838870

ABSTRACT:
A process for producing carotenoids and carotenoid intermediates via reduction of sulfonyl polyenes with a dithionite in the presence of ammonia or an aliphatic amine, including novel intermediates in this process, which carotenoids are known coloring agents for foodstuffs, animal feeds, pharmaceuticals, etc.

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Manchand, J. Org. Chem. vol. 43, No. 25, 4769 (1978).
Mandai, J. Am. Chem. Soc. 1984, 106, p. 3670.

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