Synthesis and chemical reactions of some conjugated heteroenoid compounds

1967 ◽  
Vol 45 (9) ◽  
pp. 1001-1006 ◽  
Author(s):  
R. F. Silver ◽  
K. Ann Kerr ◽  
Peggy D. Frandsen ◽  
Sheila J. Kelley ◽  
H. L. Holmes
Keyword(s):  
Chemical Reactions ◽  
Room Temperature ◽  
Cyano Group ◽  
Ethyl Cyanoacetate ◽  
Geometric Configuration ◽  
Cinnamic Acids ◽  
Active Methylene Compounds ◽  
Derivatives Of ◽  
Active Methylene

A series of 326 3-benzal-2,4-pentanediones, 2-benzal-1,3-indanediones, ethyl benzalaceto-acetates, diethyl benzalmalonates, ethyl benzalcyanoacetates, benzalmalononitriles, benzalcyanoacetamides, benzalcyanoacetanilides, benzalmalonamides, β-nitrostyrenes, β-nitropropenylbenzenes, β-nitrobutenylbenzenes, and derivatives of a number of cinnamic acids have been synthesized and their geometric configuration discussed. Aniline, p-toluidine, and n-butanethiol have been added to some of these compounds. The aniline adducts have also been prepared from benzylideneaniline and the active methylene compounds. The aniline adducts of those containing a cyano group are not stable and lose aniline at room temperature. The structure of the compound prepared from benzylideneaniline and ethyl cyanoacetate and melting at 140 °C has been established.

scholarly journals A new and facile synthetic approach to substituted 2-thioxoquinazolin-4-ones by the annulation of a pyrimidine derivative

2010 ◽  
Vol 6 ◽  
pp. 1056-1060 ◽  
Author(s):  
Nimalini Devi Moirangthem ◽  
Warjeet Singh Laitonjam
Keyword(s):  
Ethyl Cyanoacetate ◽  
Pyrimidine Derivative ◽  
Synthetic Approach ◽  
Facile Synthesis ◽  
Benzenoid System ◽  
Active Methylene Compounds ◽  
Pyrimidine Moiety ◽  
Derivatives Of ◽  
Active Methylene

A new and facile synthesis of 2-thioxoquinazolin-4-ones by introducing a benzenoid system in the pyrimidine moiety by reacting ethoxymethylene derivatives of 1,3-diarylthiobarbituric acids (DTBA) with active methylene compounds, such as malononitrile and ethyl cyanoacetate, in presence of ZnCl2 has been developed.

The remarkable catalytic activity of ultra-small free-CeO2 nanoparticles in selective carbon–carbon bond formation reactions in water at room temperature

2015 ◽  
Vol 39 (7) ◽  
pp. 5350-5353 ◽  
Author(s):  
Subhash Banerjee
Keyword(s):  
Catalytic Activity ◽  
Room Temperature ◽  
Bond Formation ◽  
Ceo2 Nanoparticles ◽  
Cerium Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Reusable Catalyst ◽  
Carbon Carbon Bond ◽  
Active Methylene Compounds ◽  
Active Methylene

A simple and efficient protocol for selective bis-Michael addition and mono-allylation of active methylene compounds has been demonstrated using ultra-small size (∼5 nm) uncapped cerium oxide nanoparticles (free-CeO2 NPs) as a reusable catalyst in water at room temperature.

Polarographic half-wave potentials and ultraviolet absorption spectra of some conjugated heteroenoid compounds

1969 ◽  
Vol 47 (21) ◽  
pp. 4076-4083 ◽  
Author(s):  
H. L. Holmes ◽  
D. J. Currie
Keyword(s):  
Absorption Spectra ◽  
Functional Groups ◽  
Ultraviolet Absorption ◽  
Half Wave ◽  
Active Methylene Compounds ◽  
Derivatives Of ◽  
Active Methylene ◽  
Hammett Relationship

The half-wave potentials of phenyl substituted derivatives for each series of conjugated heteroenoid compounds studied follow a Hammett relationship. The effect of change in the functional groups and of increase in length of the conjugated system upon half-wave potentials and ultraviolet absorption maxima is briefly discussed. Terephthalylidene derivatives of active methylene compounds function like the cinnamylidene derivatives.

Ionic-liquid-supported 1,5,7-triazabicyclo[4.4.0]dec-5-ene — An efficient and recyclable organocatalyst for Michael addition to α,β-unsaturated ketones

2012 ◽  
Vol 90 (3) ◽  
pp. 290-297 ◽  
Author(s):  
Manoj Kumar Muthyala ◽  
Bhupender S Chhikara ◽  
Keykavous Parang ◽  
Anil Kumar
Keyword(s):  
Ionic Liquid ◽  
Michael Addition ◽  
Room Temperature ◽  
Significant Loss ◽  
Unsaturated Ketones ◽  
Ability To Act ◽  
Solvent Free Conditions ◽  
Active Methylene Compounds ◽  
Active Methylene ◽  
The Michael Addition

A novel ionic-liquid-supported 1,5,7-triazabicyclo[4.4.0]dec-5-ene (IL–TBD) was synthesized and investigated for its ability to act as an active organocatalyst in the Michael addition of active methylene compounds and thiophenols to chalcones under solvent-free conditions. The IL–TBD afforded Michael addition products in excellent yields (82%–94%) at room temperature, and it was simply recycled and reused at least five times without significant loss of catalytic activity.

Acylaminoacetyl derivatives of active methylene compounds.3.C-Acylation Reactionsviathe Hippuric Acid Azlactone

1994 ◽  
Vol 31 (5) ◽  
pp. 1145-1150 ◽  
Author(s):  
Stylianos Hamilakis ◽  
Demetrios Kontonassios ◽  
Constantine Sandris
Keyword(s):  
Hippuric Acid ◽  
Active Methylene Compounds ◽  
Derivatives Of ◽  
Active Methylene

Reactions of ferrocenyl chalcones with hydrazines and active methylene compounds

2016 ◽  
Vol 22 (2) ◽  
pp. 69-77 ◽  
Author(s):  
Marwa El-Hussieny ◽  
Hisham Abdallah A. Yosef ◽  
Mohamed R.H. Mahran ◽  
Nabila M. Ibrahim
Keyword(s):  
Hydrazine Hydrate ◽  
Reaction Mechanisms ◽  
Ethyl Acetoacetate ◽  
New Products ◽  
Ethyl Cyanoacetate ◽  
Spectroscopic Methods ◽  
Phenyl Hydrazine ◽  
Active Methylene Compounds ◽  
Ferrocenyl Chalcones ◽  
Active Methylene

AbstractClaisen-Schmidt condensation of ferrocenecarboxaldehyde (2b) with 2-acetylfuran (4) yielded (E)-3-ferrocenyl-1-(2-furyl)prop-2-en-1-one (E-5) together with 1,5-di(2-furyl)-3-ferrocenylpentane-1,5-dione (6). Reactions of the ferrocenyl chalcones 3a,b and 5 with hydrazine hydrate, phenyl hydrazine, ethyl acetoacetate, ethyl cyanoacetate and malononitrile, were also studied. Possible reaction mechanisms were discussed and structures of the new products were unambiguously characterized by common analytical and spectroscopic methods.

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