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Synlett 2004(11): 1937-1940
DOI: 10.1055/s-2004-830873
DOI: 10.1055/s-2004-830873
LETTER
© Georg Thieme Verlag Stuttgart · New York
Highly Efficient and General Synthetic Method of Various Retinyl Ethers
Weitere Informationen
Received
12 May 2004
Publikationsdatum:
06. August 2004 (online)
Publikationsverlauf
Publikationsdatum:
06. August 2004 (online)

Abstract
Bromination of 4 by PBr3 under CuI catalyst produces the ambidextrous allylic halide 5 regioselectively and stereoselectively. Hetero nucleophiles distinguish the allylic carbon containing Br from the one containing Cl in 5 to give the heteroatom-substituted C5 allylic chloride 3. The Julia olefination reaction with the C15 sulfone 2 provides diverse retinyl ethers 1.
Key words
retinyl ethers - olefination - stereoselective synthesis - sulfones - vitamins
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References
Decomposition of the NMR sample of retinyl acetate in CDCl3 at ambient temperature was noticed within one week.