57742-48-0

Basic information

• Product Name: 2-ethenylcyclopropane-1,1-dicarboxylic acid
• CAS NO: 57742-48-0
• Molecular Formula: C₇H₈O₄
• Molecular Weight: 156.136
• Mol File: 57742-48-0.mol
• Article Data: 5

Chemical Properties

• Boiling Point: 348.9°C at 760 mmHg
• Flash Point: 179°C
• Density: 1.609g/cm³
• Vapor Pressure: 8.47E-06mmHg at 25°C
• Refractive Index: 1.681
• CAS DataBase Reference: 2-ethenylcyclopropane-1,1-dicarboxylic acid(CAS DataBase Reference)
• NIST Chemistry Reference: 2-ethenylcyclopropane-1,1-dicarboxylic acid(57742-48-0)
• EPA Substance Registry System: 2-ethenylcyclopropane-1,1-dicarboxylic acid(57742-48-0)

Safety Data

• Hazardous Substances Data: 57742-48-0(Hazardous Substances Data)

Upstream product

• 7686-78-4 diethyl 2-vinylcyclopropane-1,1-dicarboxylate 
• 17447-60-8 dimethyl 2-vinylcyclopropane-1,1-dicarboxylate 

Downstream Products

• 21963-38-2 5-vinyl-dihydrofuran-2(3H)-one 
• 87256-39-1 2,3,4,7-tetrahydrooxepin-2-one 
• 53-16-7 Estrone 
• 1670-49-1 3-methyl ether of Δ⁹⁽¹¹⁾-dehydroestrone 
• 1624-62-0 estrone 3-methyl ether 
• 75863-04-6 3-Methoxy-6,7:8,9-diseco-1,3,5⁽¹⁰⁾,7-oestratetraen-11,17-dion 

Relevant articles and documents

The mesophase behavior and structure of 1,1-bis(perfluoroalkyl)-2- vinylcyclopropane polymers

We introduced new poly(2-vinylcyclopropane)s carrying two perfluoroalkyl mesogens per repeat unit at the same main chain carbon atom. The relative lengths of the hydrocarbon-fluorocarbon segments were varied. Copolymers with a non-mesogenic 2-vinylcyclopropane were also prepared. X-ray diffraction studies proved the formation of smectic mesophases, the type of which depended on the chemical nature of the polymers: SmB2, SmI2 (or SmF2), and SmAd. We emphasize the role of intramolecular microphase segregation in determining the mesophase behavior and structure.

Synthesis and radical ring-opening polymerization of vinylcyclopropanes derived from amino acids with hydrophobic moieties

Six 1,1-disubstituted vinylcyclopropanes (VCP) were synthesized from glycine and amino acids bearing hydrophobic moieties, l-alanine, l-valine, l-leucine, l-isoleucine, and l-phenylalanine. These VCP derivatives efficiently underwent radical ring-opening polymerization to afford the corresponding polymers bearing trans-vinylene moiety in the main chains and the amino acid-derived chiral moieties in the side chains. The polymers were film-formable, and in the films of polymers bearing the glycine- and alanine-derived side chains, presence of hydrogen bonding was confirmed by IR analysis. Thermogravimetric analysis of the polymers revealed that the temperatures of 5% weight loss were higher than 300 °C. Differential scanning calorimetry clarified that the polymers were amorphous ones showing glass transition temperatures in a range of 48–80 °C.

Asymmetric total synthesis of 19-nor-steroids via a photochemical key reaction: Enantiomerically pure target compounds

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