Manufacture of symmetrical carotenoids

Details Manufacture of symmetrical carotenoids Manufacture of symmetrical carotenoids

1977-07-20

1978-11-28

Edmundson, F.C.

Chemistry: electrical and wave energy

Processes and products

204 72, 260666C, C25B 302, C07C 1121

Patent

active

041274555

ABSTRACT:
Symmetrical carotenoids are manufactured from the molecular halves thereof by a process wherein phosphonium salts of the molecular halves of these symmetrical carotenoids are oxidized electrochemically in a solvent and in the presence of a base, causing the molecular halves to dimerize, with elimination of substituted phosphine oxide.

REFERENCES:
patent: 3480525 (1969-11-01), Wessling et al.
patent: 3480527 (1969-11-01), Wessling et al.
patent: 3764492 (1973-10-01), Baizer et al.
patent: 3859183 (1975-01-01), Wagenknecht

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