Synthesen in der Carotinoid‐Reihe. 10. Mitteilung. Anwendung der  Wittig ‐Reaktion zur Synthese von Estern des Bixins und Crocetins | Zendy

Isler O. | Zendy; Gutmann H. | Zendy; Montavon M. | Zendy; Rüegg R. | Zendy; Ryser G. | Zendy; Zeller P. | Zendy

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Synthesen in der Carotinoid‐Reihe. 10. Mitteilung. Anwendung der Wittig ‐Reaktion zur Synthese von Estern des Bixins und Crocetins

Author(s) -

Isler O.,

Gutmann H.,

Montavon M.,

Rüegg R.,

Ryser G.,

Zeller P.

Publication year - 1957

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.19570400515

Subject(s) - chemistry , wittig reaction , aldehyde , crocetin , stereochemistry , medicinal chemistry , organic chemistry , catalysis , food science , carotenoid

A simple and efficient synthesis of norbixin and crocetin diesters is described following the schemes C 2 + C 2o + C 2 ,=C 24 and C 3 + C 14 + C 3 = C 20 respectively. By means of the Wittig reaction crocetin di‐aldehyde is condensed with a bromoacetic acid ester and a C 14 ‐dialdehyde with an α‐bromopropionic acid ester. The intermediate tri‐ phenylphosphorane compounds are crystalline and easily isolated in a pure state.

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