Premium
Synthesen in der Carotinoid‐Reihe. 14. Mitteilung Synthese von β‐Apo‐12'‐carotinal (C 25 )
Author(s) -
Rüegg R.,
Lindlar H.,
Montavon M.,
Saucy G.,
Schaeren S. F.,
Schwieter U.,
Isler O.
Publication year - 1959
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.19590420327
Subject(s) - chemistry , polyene , canthaxanthin , aldehyde , stereochemistry , enol , ether , enol ether , carotenoid , organic chemistry , catalysis , biochemistry , astaxanthin
Using the enol benzoate or enol ether of methylmalonaldehyde and 1, l‐diethoxy‐2‐methylpent‐2‐en‐4‐yne as intermediates for polyene syntheses a number of polyenes have been synthesized. From β‐C 19 ‐aldehyde, β‐apo‐12′‐carotenal(C 25 ) has been prepared via the 15,15′‐dehydro compound and found to be identical with one of the oxidation products of β‐carotene previously obtained by K ARRER . The preparation of key intermediates for the lycopene and canthaxanthin synthesis has been improved.