Journal ArticleDOI
Ionic liquid promoted expeditious synthesis of flavones
Rajesh S. Bhosale,Swapnil R. Sarda,R. P. Giram,Dnyaneshwar S. Raut,S. P. Parwe,Suresh S. Ardhapure,Rajendra P. Pawar +6 more
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In this paper, a smooth conversion of substituted 1-(2-hydroxy phenyl)-3-phenyl-1,3-propane diones to flavones has been done using n-butyl-3-methyl-imidazolium tetrafluoroborate ionic liquid.Abstract:
A smooth conversion of substituted 1-(2-hydroxy phenyl)-3-phenyl-1,3-propane diones to flavones has been done using n-butyl-3-methyl-imidazolium tetrafluoroborate ionic liquid.read more
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3-Methyl-1-Sulfonic acid imidazolium chloride as a new, efficient and recyclable catalyst and solvent for the preparation of N-sulfonyl imines at room temperature
TL;DR: New Bronsted acidic ionic liquid, 3-methyl-1-sulfonic acid imidazolium chloride {[Msim]Cl} was used as an efficient, green and reusable catalyst and solvent for the synthesis of N-Sulfonyl imines via the condensation of sulfonamides with aldehydes as well as isatin this article.
Journal ArticleDOI
PEG-SO3H as a new, highly efficient and homogeneous polymeric catalyst for the synthesis of bis(indolyl)methanes and 4,4′-(arylmethylene)-bis(3-methyl-1-phenyl-1Hpyrazol-5-ol)s in water
TL;DR: In this paper, a green, simple and highly efficient procedure for the synthesis of bis(indolyl)methanes and 4,4′- (arylmethylene)-bis(3-methyl-1-phenyl-1H-pyrazol-5-ol)s is described.
Journal ArticleDOI
Thermophysical properties of a room temperature ionic liquid (1-methyl-3-pentyl-imidazolium hexafluorophosphate) with poly(ethylene glycol)
TL;DR: In this paper, the Redlich-Kister polynomial equation was used to obtain the binary coefficients and the standard deviations of the coefficient of thermal expansion for the binary mixtures of 1-methyl-3-pentyl-imidazolium hexafluorophosphate [MPI][PF 6 ] with poly(ethylene glycol) (PEG) [M w Â=200] are measured over the whole composition range.
Journal ArticleDOI
Synthesis and characterization of protic ionic liquids containing cyclic amine cations and tetrafluoroborate anion
Tzi-Yi Wu,Tzi-Yi Wu,Shyh Gang Su,Shr-Tusen Gung,M. Lin,Yuan-Chung Lin,W. C. Ou-Yang,I-Wen Sun,C. A. Lai +8 more
TL;DR: In this article, tetrafluoroborate-based room temperature ionic liquids were synthesized and their thermal properties, refractive index, polarity, electrochemical property, and temperature dependency of dynamic viscosity, density and ionic conductivity were characterized.
Journal ArticleDOI
Pyrrolidine and iodine catalyzed domino aldol-Michael-dehydrogenative synthesis of flavones
TL;DR: In this article, a one-pot synthesis of flavones was established from 2′-hydroxyacetophenones and substituted aromatic aldehydes using domino aldol-Michael-oxidation reaction catalyzed by pyrrolidine as a base and iodine as an oxidant in dimethyl sulfoxide.
References
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Journal ArticleDOI
Chalcones and flavonoids as anti-tuberculosis agents.
TL;DR: A hydrophobic substituent on one aromatic ring, and a hydrogen-bonding group on the other aromatic ring resulted in increased anti-TB activity of the chalcones and chalcone-like compounds.
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Differential effects of flavonoids as inhibitors of tyrosine protein kinases and serine/threonine protein kinases
TL;DR: Lineweaver-Burk plots revealed that myricetin competitively inhibits pp130fps tyrosine kinases, myosin light chain kinase, casein kinase I and II with ATP, but does not inhibit other protein kinases.
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Synthesis and protein-tyrosine kinase inhibitory activities of flavonoid analogues.
TL;DR: Most active substance prepared in this study is compound 17c, which is approximately 1 order of magnitude more potent than the natural product quercetin, which was a competitive inhibitor of p56lck with respect to ATP and was highly selective for the inhibition of protein-tyrosine over protein-serine/threonine kinases.
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Flavonolignan and flavone inhibitors of a Staphylococcus aureus multidrug resistance pump: structure-activity relationships.
Nathan R. Guz,Frank R. Stermitz,Jeffrey B. Johnson,Teresa D. Beeson,Seth Willen,Jen-Fang Hsiang,Kim Lewis +6 more
TL;DR: The discovery of a potent naturally occurring flavonolignan inhibitor of the NorA MDR pump of Staphylococcus aureus provided a structural foundation upon which SARs could be assessed via synthetic analogues.
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Ionic liquid promoted novel and efficient one pot synthesis of 3,4-dihydropyrimidin-2-(1H)-ones at ambient temperature under ultrasound irradiation
TL;DR: In this paper, the role of ionic liquid (IL) in promoting multicomponent 3,4-Dihydropyrimidin-2-(1H)-ones has been investigated.