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Synthesis of β-Carotene and Certain Polyenes via Thiapyran Intermediates

✍ Scribed by Chechak, Albert J.; Stern, Max H.; Robeson, Charles D.


Book ID
126301753
Publisher
American Chemical Society
Year
1964
Tongue
English
Weight
551 KB
Volume
29
Category
Article
ISSN
0022-3263

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## Abstract A substitute for the __Darzens__ glycidic ester synthesis for converting unsaturated ketones or aldehydes into the homologated β,γ‐ or α,β‐unsaturated aldehydes employing sulfur ylides is described. The carbonyl group is converted into the unsaturated oxirane which is then rearranged to