A New Synthesis of trans-β-Carotene and Decapreno-β-carotene 1
✍ Scribed by SURMATIS, JOSEPH D.; OFNER, ALFRED
- Book ID
- 127015389
- Publisher
- American Chemical Society
- Year
- 1961
- Tongue
- English
- Weight
- 314 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0022-3263
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The synthesis of 10,lO' 19,19 , 19,19' , 19' 19'-2H8p-carotene is described. The double condensation (C15+C o+C15=C40) of the Wittig salt of 9 , 9 , 9 , 10-2H4-pionyliaene ethanol with the symmetrical Cl0 dial 2,7- dimethyl-2 , 4 , 6-octatrienedial led directly to 2H -pcarotene. The symmetrical labe
Synthesis of C15,14%-ring locked all-trans-b-carotene is described. The symmetric nature of the b-carotene analog allowed for rapid construction of the carbon frame through bis-olefination of the central dialdehyde containing the ring functionality with a C15 ylide bearing the ionone moiety.