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Results: 1-25/30
Authors:
Levai, A
Silva, AMS
Cavaleiro, JAS
Patonay, T
Silva, VLM
Citation: A. Levai et al., Dimethyldioxirane oxidation of (E,E)-cinnamylideneacetophenones, EUR J ORG C, (17), 2001, pp. 3213-3219
Authors:
Toth, G
Simon, A
Levai, A
Kahlig, H
Kalchhauser, H
Citation: G. Toth et al., O-17 NMR studies on (E)-3-arylidenechromanone and -flavanones derivatives, MAGN RES CH, 39(8), 2001, pp. 463-465
Authors:
Toth, G
Kovacs, J
Levai, A
Kleinpeter, E
Koch, A
Citation: G. Toth et al., NMR and quantum-chemical study of the stereochemistry of spiroepoxides obtained by oxidation of (Z)-3-arylidene-1-thioflavan-4-ones, MAGN RES CH, 39(5), 2001, pp. 251-258
Authors:
Patonay, T
Varma, RS
Vass, A
Levai, A
Dudas, J
Citation: T. Patonay et al., Highly diastereoselective Michael reaction under solvent-free conditions using microwaves: conjugate addition of flavanone to its chalcone precursor, TETRAHEDR L, 42(8), 2001, pp. 1403-1406
Authors:
Patonay, T
Dinya, Z
Levai, A
Molnar, D
Citation: T. Patonay et al., Reactivity of alpha-arylidene benzoheteracyclanone dibromides toward azideion: an effective approach to 3-(alpha-substituted-benzyl)chromones and-1-thiochromones, TETRAHEDRON, 57(14), 2001, pp. 2895-2907
Authors:
Levai, A
Toth, G
Kovacs, J
Patonay, T
Vass, EB
Citation: A. Levai et al., Epoxidation of (Z)-3-arylidene-1-thioflavanones, MONATS CHEM, 132(6), 2001, pp. 707-713
Authors:
Patonay, T
Adam, W
Levai, A
Kover, P
Nemeth, M
Peters, EM
Peters, K
Citation: T. Patonay et al., Chemo- and diastereoselectivity in the dimethyldioxirane oxidation of 2,3-dihydro-4H-1-benzothiopyran-4-ones and 4H-1-benzothiopyran-4-ones. Unusual reactivity of 4H-1-benzothiopyran-4-one 1-oxides, J ORG CHEM, 66(7), 2001, pp. 2275-2280
Authors:
Levai, A
Citation: A. Levai, Synthesis and chemical transformations of 1,4-, 4,1-, and 1,5-benzoxazepines, J HETERO CH, 38(5), 2001, pp. 1011-1023
Authors:
Pinto, DCGA
Silva, AMS
Levai, A
Cavaleiro, JAS
Patonay, T
Elguero, J
Citation: Dcga. Pinto et al., Synthesis of 3-benzoyl-4-styryl-2-pyrazolines and their oxidation to the corresponding pyrazoles, EUR J ORG C, (14), 2000, pp. 2593-2599
Authors:
Peters, K
Peters, EM
Adam, W
Kover, P
Levai, A
Patonay, T
Citation: K. Peters et al., Crystal structure of [1S,2S]-cis-6-chloro-2-methyl-1-thiochroman-4-one 1-oxide, C9H6SO2(CH3)Cl, Z KRIST-NEW, 215(2), 2000, pp. 217-218
Authors:
Peters, K
Peters, EM
Adam, W
Kover, P
Levai, A
Patonay, T
Citation: K. Peters et al., Crystal structure of [1S,2R*]-trans-6-chloro-2-methyl-1-thio-chroman-4-one 1-oxide, C9H6SO2(CH3)Cl, Z KRIST-NEW, 215(2), 2000, pp. 219-220
Authors:
Fogassy, G
Hegedus, L
Tungler, A
Levai, A
Mathe, T
Citation: G. Fogassy et al., Selective hydrogenation of exocyclic alpha,beta-unsaturated ketones: Part I. Hydrogenations over palladium, J MOL CAT A, 154(1-2), 2000, pp. 237-241
Authors:
Levai, A
Timar, T
Seok, PE
Eszenyi, T
Citation: A. Levai et al., Synthesis of 2,2-dimethyl-2H-chromenes, HETEROCYCLE, 53(5), 2000, pp. 1193
Authors:
Timar, T
Levai, A
Eszenyi, T
Sebok, P
Citation: T. Timar et al., Synthesis of 2,2-dimethyl-4-chromanones, J HETERO CH, 37(6), 2000, pp. 1389-1417
Authors:
Levai, A
Patonay, T
Szekely, A
Vass, EB
Adam, W
Jeko, J
Citation: A. Levai et al., A comparative study of the epoxidation of 2-substituted isoflavones by dimethyldioxirane, sodium hypochlorite, and alkaline hydrogen peroxide (Weitz-Scheffer reaction), J HETERO CH, 37(5), 2000, pp. 1065-1069
Authors:
Levai, A
Citation: A. Levai, Synthesis and chemical transformations of 1,5-benzothiazepines, J HETERO CH, 37(2), 2000, pp. 199-214
Authors:
Levai, A
Citation: A. Levai, An efficient procedure for the preparation of 4-thioflavones by the reaction of flavones with Lawesson's Reagent, HETEROCYC C, 5(5), 1999, pp. 419-422
Authors:
Levai, A
Nemes, C
Patonay, T
Citation: A. Levai et al., Synthesis of new (Z)-3-arylidenecromanones by the photoisomerization of (E)-3-aryledenechromanones, HETEROCYC C, 5(5), 1999, pp. 441-444
Authors:
Levai, A
Citation: A. Levai, Oxazepines and thiazepines 38 - Synthesis of 2,4-diaryl-2,3-dihydro-1,5-benzothiazepines by the reaction of 2-hydroxychalcones with 2-aminothiophenol, HETEROCYC C, 5(4), 1999, pp. 359-364
Authors:
Levai, A
Citation: A. Levai, Fused heterocycles 9 synthesis of tricyclic pyrazolines by the reaction ofE-3-arylideneflavanones with phenylhydrazine, HETEROCYC C, 5(2), 1999, pp. 151-156
Authors:
Silva, AMS
Vieira, JS
Cavaleiro, JAS
Patonay, T
Levai, A
Elguero, J
Citation: Ams. Silva et al., New syntheses of 4(5)-aryl-5(4)-(2-chromonyl)-1,2,3-triazoles from 2-styrylchromones and sodium azide, HETEROCYCLE, 51(3), 1999, pp. 481-487
Authors:
Patonay, T
Adam, W
Jeko, J
Kover, KE
Levai, A
Nemeth, M
Peters, K
Citation: T. Patonay et al., Oxazepines and thiazepines, 36. Diastereoselective sulfoxidation of 2,3-dyhydro-1,5-benzothiazepin-4(5H)-ones by dimethyldioxirane, HETEROCYCLE, 51(1), 1999, pp. 85-94
Authors:
Patonay, T
Hajdu, C
Jeko, J
Levai, A
Micskei, K
Zucchi, C
Citation: T. Patonay et al., Enantioselective reduction of prochiral ketones by chromium(II) complexes with amino acid ligands as the source of chirality, TETRAHEDR L, 40(7), 1999, pp. 1373-1374
Authors:
Levai, A
Citation: A. Levai, Optically active 1,5-benzothiazepines, PHARMAZIE, 54(10), 1999, pp. 719-726
Authors:
Toth, G
Balazs, B
Levai, A
Fisera, L
Jedlovska, E
Citation: G. Toth et al., Stereochemistry of some spiropyrazolines and spiroisoxazolines, J MOL STRUC, 508(1-3), 1999, pp. 29-36