153139-20-9

Upstream product

• 186542-63-2 1-(3,5-dimethoxyphenyl)-2-(4-methoxyphenyl)ethanone 
• 10272-07-8 3.5-dimethoxyaniline 
• 57009-72-0 2-(3,5-dimethoxy-phenyl)-1,3-dithiane 
• 2746-25-0 p-Methoxybenzyl bromide 
• 186542-61-0 2-(3,5-dimethoxyphenyl)-2-(4-methoxybenzyl)-1,3-dithiane 

Downstream Products

• 596096-05-8 1-(3,5-dimethoxyphenyl)-2-(4-methoxyphenyl)ethyl ethanoate 
• 22255-22-7 3,5,4'-trimethoxy-trans-stilbene 
• 22255-22-7 3,5,4'-trimethoxystilbene 
• 94608-23-8 (Z)-1-(3,5-dimethoxyphenyl)-2-(4-methoxyphenyl)ethene 
• 83638-45-3 1-(3,5-dimethoxyphenyl)-2-(4-methoxyphenyl)ethane 
• 1228308-23-3 C₂₇H₂₈O₈ 
• 596096-06-9 1-(3,5-dimethoxyphenyl)-2-(4-methoxyphenyl)-1-methoxyethane 

Relevant academic research and scientific papers

NOVEL PROCESS FOR THE SYNTHESIS OF (E)-STILBENE DERIVATIVES WHICH MAKES IT POSSIBLE TO OBTAIN RESVERATROL AND PICEATANNOL

A subject-matter of the present invention is a novel process for the synthesis of (E)- stilbene derivatives targeted at obtaining in particular resveratrol and piceatannol.

Process for the preparation of polyhydroxylated stilbenes via claisen condensation

The invention realates to a Process for the preparation of resveratrol, comprising the steps of a) reaction of a compound according to formula I with a compound according to formula II to form a compound according to formula III b) conversion of the compound according to formula III to a compound according to formula IV and, if necessary, c) deprotection of the compound according to formula IV.

The photochemistry of 1-(3,5-dimethoxyphenyl)-2-(4-methoxyphenyl)ethyl ethanoate in alcohol solvents: A search for carbocation rearrangements

The photochemistry of the title compound 1 in methanol and 2,2,2-trifluoroethanol has been examined. In both solvents two ether products were obtained: one (18) resulting from trapping of the carbocation 2 (expected from photosolvolysis of 1), and the other (19) from the carbocation 3 (expected after rearrangement by hydride migration of cation 2). The substituted trans- and cis-stilbene derivatives 20 and 21 were also primary pbotoproducts. Analysis of product yields as a function of time revealed that the ether product 19 was formed by secondary photolysis of the stilbene derivatives, presumably by a pathway involving excited state protonation. Nanosecond laser flash photolysis results demonstrated that substituted trans-stilbene 20 was produced on the same time scale as the laser pulse.

Enrichment, characterization and absolute configuration of the enantiomers of 1-(3,5-dimethoxyphenyl)-2-(4-methoxyphenyl)ethanol

The racemate and enriched enantiomers of 1-(3,5-dimethoxyphenyl)-2-(4-methoxyphenyl)ethanol have been obtained via reduction of the respective ketone with LiA1H4 and with BH3 in the presence of oxazaborolidines. Enriched enantiomers were characterized by 1H NMR spectroscopy, together with the Eud-(hfbc)3 reagent, and by polarimetry. The absolute configuration was obtained by 1H and 13C NMR spectroscopy from the (S)-MTPA esters. The configuration of the esters was optimized by force-field calculation. Acta Chemica Scandinavica 1996.