20972-37-6

Basic information

• Product Name: (E)-4-(4-methoxyphenyl)-4-oxo-2-butenoic acid
• Synonyms: (E)-4-(4-methoxyphenyl)-4-oxo-2-butenoic acid
• CAS NO: 20972-37-6
• Molecular Weight: 206.198
• Mol File: 20972-37-6.mol
• Article Data: 19

Chemical Properties

• CAS DataBase Reference: (E)-4-(4-methoxyphenyl)-4-oxo-2-butenoic acid(CAS DataBase Reference)
• NIST Chemistry Reference: (E)-4-(4-methoxyphenyl)-4-oxo-2-butenoic acid(20972-37-6)
• EPA Substance Registry System: (E)-4-(4-methoxyphenyl)-4-oxo-2-butenoic acid(20972-37-6)

Safety Data

• Hazardous Substances Data: 20972-37-6(Hazardous Substances Data)

Upstream product

• 18096-70-3 3-(dimethylamino)-1-(4-methoxyphenyl)prop-2-en-1-one 
• 298-12-4 Glyoxilic acid 
• 100-06-1 1-(4-methoxyphenyl)ethanone 
• 6000-59-5 glyoxalic acid monohydrate 
• 100-66-3 methoxybenzene 
• 63639-60-1 2-hydroxy-4-(4-methoxy-phenyl)-4-oxo-butyric acid 
• 108-31-6 maleic anhydride 

Downstream Products

• 110048-38-9 2-(3,4-dimethoxy-phenyl)-4-(4-methoxy-phenyl)-4-oxo-butyric acid 
• 110049-03-1 2-(2,4-dimethoxy-phenyl)-4-(4-methoxy-phenyl)-4-oxo-butyric acid 
• 123533-55-1 8-Chloro-4-(4-methoxy-phenyl)-2,3-dihydro-benzo[b][1,4]thiazepine-2-carboxylic acid 
• 123533-57-3 4-(4-Methoxy-phenyl)-8-methyl-2,3-dihydro-benzo[b][1,4]thiazepine-2-carboxylic acid 
• 346722-43-8 (S)-2-((R)-1-Hydroxymethyl-propylamino)-4-(4-methoxy-phenyl)-4-oxo-butyric acid 
• 728925-56-2 1-{[(2E)-4-(4-methoxyphenyl)-4-oxobut-2-enoyl]oxy}pyrrolidine-2,5-dione 
• 212010-24-7 (αS,1S)-α-[N-(1-methyl)benzyl]-β-[4'-(methoxy)benzoyl]alanine 
• 112162-77-3 (E)-1-(4-methoxyphenyl)-4-morpholin-4-ylbut-2-ene-1,4-dione 
• 380335-24-0 7-(4-methoxyphenyl)-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrido[2,3-d]pyrimidine-5-carboxylic acid 
• 67362-41-8 7-(4-methoxyphenyl)-1,3-dimethylpyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione 
• 32149-29-4 4-(4-methoxy-phenyl)-4-oxo-but-2-enoic acid methyl ester 
• 32095-86-6 (Z)-methyl 4-(4-methoxyphenyl)-4-oxobut-2-enoate 
• 127427-28-5 trans-ethyl-4-(4-methoxyphenyl)-4-oxobut-2-enoate 

Relevant articles and documents

Comparison of the Photochemistry of Acyclic and Cyclic 4-(4-Methoxy-phenyl)-4-oxo-but-2-enoate Ester Derivatives

To clarify the cis-trans isomerization mechanism of simple alkenes on the triplet excited state surface, the photochemistry of acyclic and cyclic vinyl ketones with a p-methoxyacetophenone moiety as a built-in triplet sensitizer (1 and 2, respectively) wa

Base-Promoted Annulative Difluoromethylenation of Enaminones with BrCF2CO2Et toward 2,2-Difluorinated 2,3-Dihydrofurans

A practical method for the synthesis of 2,2-difluorinated 2,3-dihydrofurans has been established via the [4 + 1] annulation of enaminones and BrCF2CO2Et with Na2CO3 promotion. This new protocol does not employ any transition metal reagent and enables the annulative difluoromethylation by the partial cleavage of the C═C double bond. In addition, the further treatment with hydrochloric acid in one pot leads to β-keto enoic acids (4-oxo-2-butenoic acids) via a formal enaminone C-N carboxylation.

Isocyanide-based MCRs: Diastereoselective cascade synthesis of perfluoroalkylated pyrano[3,4-c]pyrrole derivatives

The highly diastereoselective synthesis of perfluoroalkyl-containing pyrano[3,4-c]pyrroles has been accomplished via a cascade process involving Michael addition, Passerini-type reaction, Mumm rearrangement and an oxo-Diels–Alder reaction. This domino tra