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Synthesen in der Carotinoid‐Reihe. 17. Mittelung. γ‐Carotin sowie d , l ‐α‐ und β‐Carotin aus Dehydro‐β‐apo‐12′‐carotinal(C 25 )
Author(s) -
Rüegg R.,
Schwieter U.,
Ryser G.,
Schudel P.,
Isler O.
Publication year - 1961
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19610440414
Subject(s) - chemistry , bromide , stereochemistry , organic chemistry
γ‐Carotene (m. p. 153°) has been synthesized by a W ITTIG reaction of either dehydro‐β‐apo‐l2′‐carotenal(C 25 ) (V) with pseudo‐ionylideneethyl‐triphenylphosphonium chloride (IV) (C 25 + C 15 = C 40 ) or of β‐apo‐8′‐carotenal(C 30 ) (VII) with geranyltriphenylphosphonium bromide (VIII) (C 30 + C 10 = C 40 ).