42273-19-8

Basic information

• Product Name: 2,3,2',3'-tetradehydro-β,β-carotene
• CAS NO: 42273-19-8
• Molecular Weight: 532.853
• Mol File: 42273-19-8.mol
• Article Data: 6

Chemical Properties

• CAS DataBase Reference: 2,3,2',3'-tetradehydro-β,β-carotene(CAS DataBase Reference)
• NIST Chemistry Reference: 2,3,2',3'-tetradehydro-β,β-carotene(42273-19-8)
• EPA Substance Registry System: 2,3,2',3'-tetradehydro-β,β-carotene(42273-19-8)

Safety Data

• Hazardous Substances Data: 42273-19-8(Hazardous Substances Data)

Upstream product

• 144-68-3 zeaxanthin 
• 127-40-2 lutein 
• 507-09-5 tiolacetic acid 
• 645-96-5 Benzeneselenol 

Relevant articles and documents

Synthetic Sulfur Carotenoids II: Optically Active Carotenoid Thiols

(3R,3'R)-Zeaxanthin was reacted with thioacetic acid or with thiocyano acid in a Mitsunobu reaction to provide the corresponding thioacetates and thiocyanates with inverted configuration.Reduction or hydrolysis of these intermediates provided (3R,3'S)-3'-

Synthetic Nitrogen Carotenoids: Optically Active Carotenoid Amines

(3R,3'R)-Zeaxanthin was reacted with hydrazoic acid in a Mitsonobu reaction to yield azides with inverted configuration.Reduction of these azides with hydrogen telluride provided (3S)-2',3'-didehydro-β,β-caroten-3-amine, (3R,3'S)-3'-amino-β,β-caroten-3-ol

Partial Syntheses of Diastereomeric Carotenols

The application of the Mitsunobu reaction was successfully tested on (3R,3'R)-zeaxanthin, giving the (3S,3'S)-enantiomer and meso form.Applied to natural (3R,3'R,6'R)-lutein, this inversion reaction allowed the preparation of the three other 6'R diastereomers. (3S,3'S,6'R)-lutein with 3',6'-cis-configuration of the ε-ring has not been synthesized before.The observed Cotton effects of the eight lutein diastereomers are rationalized by application of the additivity hypothesis.New trivial names are suggested for the eight lutein isomers on the basis of structural relationships.