Twenty 2,3-disubstituted-4(3H)-quinazolinones were synthesed by one-pot three-component method with isatoic anhydride, orthoesters and amines as raw materials in the presence of KAl(SO4)2·12H2O (Alum) under microwave irradiation and solvent-free conditions. 6-Bromo-2-propyl-3-p-tolyl...
Aromatic aldehydes were reacted in a vessel with enolizable ketones, acetonitrile, and acetyl chloride at ambient temperature in the presence of KAl(SO4)2.12H2O to furnish the corresponding -acetamido ketones in excellent yields. KHSO4 has also been used as another catalyst for this reaction at ...
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In this letter, an efficient synthesis of an array of poly-substituted quinolines from 2-aminoaryl ketones and beta-ketoester, beta-diketones and alpha-methylene ketones using KA1(SO4)(2)center dot 12H(2)O-SiO2 (Alum-SiO2) under solvent-free conditions is described. Compared with the class...
2-SUBSTITUTED BENZOTHIAZOLESCARBOXYLIC-ACIDSINTRAMOLECULAR CYCLIZATIONPARALLEL SYNTHESISORGANIC-REACTIONSHIGHLY EFFICIENTHECK REACTIONAlum (KAl(SO4)(2)center dot 12H(2)O) performs as a novel catalyst for the synthesis of 2-arylbenzothiazoles and 2-arylbenzoxazole from o-aminothiophenol and o-aminophenol ...
Alum [KAl(SO4)2AE12H2O]: a green and efficient catalyst for synthesis of pyrano[4,3-b]pyrans in water under conventional and microwave conditions. Monatsh. Chem. 144, 1411-1416.D. Rajguru, B.S. Keshwal, S. Jain, V.W. Bhagwat, Monatsh Chem. 144 , 1411 (2013)...
Potassium alumHeat capacityDebye temperatureTwo earlier published experimental data [C. H. Shomate, J. Am. Chem. Soc. 67, 765 (1945); D. G. Kapadnis and R. Hartmans, Physica 22, 173 (1956)] of the molar heat capacity C (p) of potassium alum, KAl(SO4)(2)center dot 12H(2)O,...
2.0.TX;2-TGoryainov, SInst Mineral & PetrogPhysica Status Solidi. A, Applied ResearchGoryainov S (2005) Pressure-induced amorphization of Na2Al2Si3O10·2H2O and KAlSi2O6 zeolites. Phys Status Sol A 202:R25–R27 View ArticleGoryainov S (2005) Pressure-induced amorphization of Na2Al2Si3...
The longitudinal acoustic phonon propagating along the [100] direction in a potassium alum KAl(SO4)(2)center dot 12H(2)O single crystal from 297 to 77 K has been studied on the basis of Brillouin light scattering. On cooling, inverse sigmoid-shaped hardening of the Brillouin shift (and the...