63272-88-8

Basic information

• Product Name: 3-(pyridin-2-ylmethylidene)pentane-2,4-dione
• Synonyms: 3-(2-Pyridinylmethylene)-2,4-pentanedione
• CAS NO: 63272-88-8
• Molecular Formula: C₁₁H₁₁NO₂
• Molecular Weight: 189.2105
• Mol File: 63272-88-8.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 383.7°C at 760 mmHg
• Flash Point: 188.9°C
• Density: 1.131g/cm³
• Vapor Pressure: 4.32E-06mmHg at 25°C
• Refractive Index: 1.559
• CAS DataBase Reference: 3-(pyridin-2-ylmethylidene)pentane-2,4-dione(CAS DataBase Reference)
• NIST Chemistry Reference: 3-(pyridin-2-ylmethylidene)pentane-2,4-dione(63272-88-8)
• EPA Substance Registry System: 3-(pyridin-2-ylmethylidene)pentane-2,4-dione(63272-88-8)

Safety Data

• Hazardous Substances Data: 63272-88-8(Hazardous Substances Data)

Upstream product

• 1121-60-4 pyridine-2-carbaldehyde 
• 123-54-6 acetylacetone 

Relevant articles and documents

Replacement Substituent Constants for Simple Heterocycles

13C nmr absorptions are reported for the β-vinylic carbon atoms in 15 series of ethylenes bearing heterocyclic substituents.The data are used to establish the best single-parameter substituent constants, ?13, for the various heterocycles as replacements for para-substituted benzenes.Also reported are replacement dual substituent constants, including ?I and the various ?R scales needed in the Taft DSP treatment and those for F and R used in the Swain-Lupton treatment.Values of ?13, F, R, ?I, and ?Ro, respectively, for the various heterocycles as replacements for para-substituted benzenes are as follows: 2-furyl, -1.01 , 0.99, -2.51, 0.65, -0.60; 2-pyrryl, -2.53, 0.52, -5.09, -0.16, -0.62; 2-thienyl, -0.79, 2.49, -3.60, 1.82, -1.08; 3-thienyl, -0.40, 1.04, -1.57, 0.59, -0.39; 2-pyridyl, 0.88, 2.09, -0.24, 1.65, -0.45; 3-pyridyl, 0.60, 0.57, 0.63, 0.35, 0.04; and 4-pyridyl, 1.18, 1.22, 1.09, 0.92, -0.01.The DSP-NLR method of analysis is explored using electron demand parameters, ε, as determined for the vinylic side chains in para-substituted styrenes.