98977-48-1

Basic information

• Product Name: 2-Propenoic acid, 3-(4-methoxyphenyl)-, anhydride, (2E,2'E)-
• CAS NO: 98977-48-1
• Molecular Formula: C20H18O5
• Molecular Weight: 338.36
• Mol File: 98977-48-1.mol
• Article Data: 6

Chemical Properties

• CAS DataBase Reference: 2-Propenoic acid, 3-(4-methoxyphenyl)-, anhydride, (2E,2'E)-(CAS DataBase Reference)
• NIST Chemistry Reference: 2-Propenoic acid, 3-(4-methoxyphenyl)-, anhydride, (2E,2'E)-(98977-48-1)
• EPA Substance Registry System: 2-Propenoic acid, 3-(4-methoxyphenyl)-, anhydride, (2E,2'E)-(98977-48-1)

Safety Data

• Hazardous Substances Data: 98977-48-1(Hazardous Substances Data)

Upstream product

• 830-09-1 3-(4'-methoxyphenyl)propenoic acid 
• 943-89-5 (E)-3-(4-methoxyphenyl)acrylic acid 
• 34446-64-5 (E)-3-(4-methoxyphenyl)propenoyl chloride 
• 459-32-5 (E)-4-fluorocinnamic acid 
• 123-11-5 4-methoxy-benzaldehyde 

Downstream Products

• 126525-77-7 (E)-1-(2-Hydroxy-4-methoxy-phenyl)-5-(4-methoxy-phenyl)-pent-4-ene-1,3-dione 
• 116108-67-9 3,4-bis(4-methoxyphenyl)cyclobutane-1,2-dicarboxylic acid 
• 36650-62-1 dimethyl (1R*,2S*,3R*,4S*)-3,4-bis(4-methoxyphenyl)cyclobutane-1,2-dicarboxylate 
• 1449388-91-3 C₂₆H₂₄O₅ 
• 1449389-18-7 C₂₅H₁₉NO₃S 
• 1449389-22-3 C₂₅H₁₉NO₃S 
• 126525-75-5 1-(2-hydroxyphenyl)-3-[2-(4-methoxyphenyl)ethenyl]propane-1,3-dione 
• 126525-76-6 2-hydroxy-5-methyl-ω-(p-methoxy)cinnamoylacetophenone 
• 76361-69-8 7-methoxy-2-[(1E)-2-(4-methoxyphenyl)ethenyl]-4H-1-benzopyran-4-one 
• 126525-79-9 2-[(1E)-2-(4-methoxyphenyl)ethenyl]-6-methyl-4H-1-benzopyran-4-one 

Relevant articles and documents

Photocatalytic Oxidative [2+2] Cycloelimination Reactions with Flavinium Salts: Mechanistic Study and Influence of the Catalyst Structure

Flavinium salts are frequently used in organocatalysis but their application in photoredox catalysis has not been systematically investigated to date. We synthesized a series of 5-ethyl-1,3-dimethylalloxazinium salts with different substituents in the positions 7 and 8 and investigated their application in light-dependent oxidative cycloelimination of cyclobutanes. Detailed mechanistic investigations with a coumarin dimer as a model substrate reveal that the reaction preferentially occurs via the triplet-born radical pair after electron transfer from the substrate to the triplet state of an alloxazinium salt. The very photostable 7,8-dimethoxy derivative is a superior catalyst with a sufficiently high oxidation power (E=2.26 V) allowing the conversion of various cyclobutanes (with Eox up to 2.05 V) in high yields. Even compounds such as all-trans dimethyl 3,4-bis(4-methoxyphenyl)cyclobutane-1,2-dicarboxylate can be converted, whose opening requires a high activation energy due to a missing pre-activation caused by bulky adjacent substituents in cis-position.

One-pot synthesis of cinnamic anhydrides from cinnamic acids and 6-chloro-2,4-dimethoxy-sec-triazine (CDMT) at room temperature

Symmetric cinnamic anhydrides were prepared by the reactions of cinnamic acid substrates with 6-chloro-2,4-dimethoxy-sec-triazine. The reactions were performed at room temperature for 15 h. Diverse cinnamic acid substrates bearing electron-withdrawing or -donating groups worked well, providing the corresponding cinnamic anhydrides in moderate-to-good yields.

Novel enzymatic synthesis of 4-O-cinnamoyl quinic and shikimic acid derivatives

The first direct synthesis of 4-O-cinnamoyl derivatives of quinic and shikimic acids were accomplished by regioselective esterification with Candida antarctica lipase A. For hydrocinnamic esters, enzymatic transesterification with vinyl esters gave excell