Zobrazeno 1 - 10
of 107
pro vyhledávání: '"Jaroslav Podlaha"'
Publikováno v:
Tetrahedron: Asymmetry. 12:3035-3045
Both chiral and achiral hydrogen bonding o-,o-,o′-,o′-tetrasubstituted biaryls often exhibit unique self-assembling properties giving rise to chiral square cyclotetramers. The individual chiral squares self-assemble further with the formation of
Publikováno v:
Tetrahedron: Asymmetry. 12:2295-2300
Single-crystal X-ray diffraction revealed that the molecules of both the title compounds (S)-5 and (S)-6 are linked, via double hydrogen bonds, in infinite chains which follow the crystallographic symmetry of the three- and four-fold screw axis, resp
Autor:
Magdalena Kvíčalová, Bernard L. Shaw, Jan Čermák, Jaroslav Podlaha, Vratislav Blechta, Pavel Vojtíšek, Stanislav Šabata
Publikováno v:
Inorganica Chimica Acta. 313:77-86
Four new ligands of diphosphinoazine type together with their dioxides were synthesized and characterized. The crystal structure of the dioxide Pri 2P(O)CH2C(But)NNC(But)CH2P(O)Pri 2, which crystallizes as a solvate with 1 mol of hydrogen perox
Publikováno v:
New Journal of Chemistry. 25:1215-1220
1′-(Diphenylphosphino)ferrocenecarboxylic acid (Hdpf) reacts with nickel(II) halides and nickel(II) thiocyanate to give the paramagnetic complexes [NiX2(Hdpf-κP)2] (X = Cl, 1; Br, 2; I, 3) and the diamagnetic planar isothiocyanato complex [Ni(SCN-
Publikováno v:
Collection of Czechoslovak Chemical Communications. 66:820-832
The achiral 1,1'-biphenyl-2,2',6,6'-tetracarboxylic acid as well as its 4,4'-dibromo and 4,4'-dinitro derivative self-assemble in crystal under formation of a two-dimensional grid set up from hydrogen-bonded cyclotetrameric compartments which are ind
Publikováno v:
Collection of Czechoslovak Chemical Communications. 66:947-958
Self-assembly of three 1,1'-biphenyl-2,2',6,6'-tetracarboxamides 2a-2c differing each from the other by substitution at the amidic nitrogens (R = H, ethyl and 1-(R)-phenylethyl, respectively) was investigated by single crystal X-ray diffraction analy
Autor:
M. Fernanda N. N. Carvalho, Jan Čermák, Stanislav Šabata, Armando J. L. Pombeiro, Adelino M. Galvão, Jaroslav Podlaha, Pavel Vojtíšek
Publikováno v:
Journal of Organometallic Chemistry. 598:318-328
A new zerovalent complex [ Pd{PPh 2 CH 2 C(Bu t )NNC(Bu t )CH 2 P Ph2}{C(CO2Me)C(CO2Me)}] (1) was prepared and its crystal structure was determined by X-ray diffraction analysis, which shows it crystallises in the C2/C monoclinic space group
Publikováno v:
Tetrahedron Letters. 41:525-529
A new and stereoselective route to the aminoglycoside components of the antibiotics lincomycin and clindamycin is presented. The key step involves diastereoselective introduction of the amino group at C-6 of d -galactose by (3,3)-sigmatropic rearrang
Publikováno v:
Collection of Czechoslovak Chemical Communications. 65:1273-1288
Crystal structure of benzohydroxamic acid and its ring-substituted derivatives RC6H4C(O)NHOH (R = 4-Me, 4-NO2, 4-Cl, 3-Cl and 2-Cl) was determined by single-crystal X-ray diffraction. In all the compounds, the hydroxamic group is in the planar amide
Autor:
Stanislav Böhm, Daniel Alexander, Jiří Závada, Jaroslav Podlaha, Petr Holý, Miroslav Slouf, Ivana Císařová
Publikováno v:
Scopus-Elsevier
A selective hexa-fold monoalkylation of the malonester carbanion (-)CH(COOR)2 (R = Me, Et, t-Bu, Bn) with hexakis(bromomethyl)benzene afforded the title compounds 3 in a high-yield reactions. On subsequent replacement of the acid α-hydrogens with bu