?-Carotene a yellow food-coloring agent and dietary source of vitamin A, can be prepared by a double
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?-Carotene a yellow food-coloring agent and dietary source of vitamin A, can be prepared by a double Witting reaction between 2 equivalents of ?-ionylideneacetaldehyde and a diylide. Show the structure of the ?-carotene product.
Transcribed Image Text:
CHO (PhlgPCH" CHP(Phi3 A diylide B-Ionylideneacetaldehyde
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H Ph3P CPph 3 Xal...View the full answer
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