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- ItemPyrimidine acyclo-C-nucleosides by ring transformations of 2-formyl-L-arabinal(Basel : MDPI, 2005) Bari, A.; Feist, H.; Michalik, M.; Peseke, K.The protected 2-formyl-L-arabinal 2 reacted with thiourea and cyanamide in the presence of sodium hydride to afford via ring transformations the 5-[1R,2S-1,2-bis(benzyloxy)-3-hydroxypropyl]-1,2-dihydropyrimidines 3 and 4, respectively. Similarly, treatment of 2 with 3-amino-2H-1,2,4-triazole yielded 6-[1R,25-1,2-bis(benzyloxy)-3-hydroxypropyl][1,2,4]-triazolo[1,5-a]pyrimidine(5) .
- ItemAn 8-fold parallel reactor system for combinatorial catalysis research(New York : Hindawi, 2006) Stoll, N.; Allwardt, A.; Dingerdissen, U.; Thurow, K.Increasing economic globalization and mounting time and cost pressure on the development of new raw materials for the chemical industry as well as materials and environmental engineering constantly raise the demands on technologies to be used. Parallelization, miniaturization, and automation are the main concepts involved in increasing the rate of chemical and biological experimentation. Copyright © 2006 Norbert Stoll et al.
- ItemCrystal structure of bis(1,3-bis[{4-methyl-pyridin-2-yl}amido]-1,1,3,3-tetramethyldisiloxane)dichromium dichloride, [(C16H24N4OSi2)CrCl]2(Berlin : de Gruyter, 2006) Irrgang, T.; Spannenberg, A.; Kempe, R.C32H48Cl2Cr2N8O2Si=, monoclinic, P121/n1 (no. 14), a = 12.416(2) Å, b = 13.668(3) Å, c = 13.172(3) Å, β = 113.83(3)°, V= 2044.8 A3, Z = 2, Rgt(F) = 0.052, wRref(F2) = 0.110, T = 200 K. © 2014 Oldenbourg Wissenschaftsverlag GmbH, Rosenheimer Str. 145, 81671 München. All rights reserved.
- ItemCrystal structure of μ-oxo-bis(σ- 1,2-bis(trimethylsilyl) vinylhafnocene) benzene solvate, [C2H{Si(CH3) 3}2Hf(C5H5)2] 2O ·C6H6(Berlin : de Gruyter, 2007) Spannenberg, A.; Beweries, T.; Bach, M.A.; Rosenthal, U.C42H64Hf2OSi4, monoclinic, P121/c1 (no. 14), a = 11.442(1) Å = 9.7998(6) Å, c = 19.827(2) Å, β = 95.229(7)°, V = 2213.9 Å, Z = 2, R gt(F) = 0.017, wRref(F2)=0.037, T=200K. © by Oldenbourg Wissenschaftsverlag,.
- ItemCrystal structure of (η4-cycloocta-1,5-dien)-N-(2- (diphenylphosphinooxy)-3-(naphthalen-1-yloxy)propyl)-N-(pentan-3-yl)-1, 1-diphenylphosphinamine-rhodium(I) tetrafluoroborate, [Rh(C8H 12)(C42H43NO2P2)][BF 4](Berlin : de Gruyter, 2007) Dai, Z.; Heller, D.; Preetz, A.; Drexler, H.-J.C50H55BF4NO2P2Rh, monoclinic, P1211 (no. 4), a = 12.722(3) Å, b = 15.248(3) Å, c = 12.818(3) Å, β = 115.80(3)°, V = 2238.7 Å3, Z = 2, Rgt(F) = 0.036, wRref(F 2) = 0.079, T = 200 K. © by Oldenbourg Wissenschaftsverlag.
- ItemCrystal structure of (η4-cycloocta-1,5-dien)(1,2-bis(diethylphosphino)-ethane)rhodium(I) tetrafluoroborate, [Rh(C8H12(C10H24P2)]BF4)(München : R. Oldenbourg Verlag GmbH, 2004) Kempe, R.; Spannenberg, A..; Heller, D.; Drexler, H.-J.C18H36BF4P2RI1, monoclinic, P121/n1 (no. 14), a = 15.522(3) Å, b = 9.173(2) Å, c = 15.862(3) Å, β = 103.91(3)°, V= 2192.3 Å3, Z = 4, Rgt(F) = 0.037, wRref(F2) = 0.087, T=200 K.
- ItemCrystal structures of 1-2-(dicyclohexylphosphinophenyl)pyrol-2- dicyclohexylphosphino-rhodium(I) norborna-2,5-diene tetrafluoroborate tetrahydrofuran hemisolvate, [Rh(C34H5INP 2)(C7H8)] [BF4] · 0.5C 4H8O, and 1-2-(dicyclohexylphosphinophenyl)-pyrol-2- dicyclohexylphosphino-rhodium(I) (Z,Z)-cycloocta...(Berlin : de Gruyter, 2007) Jackstell, R.; Dai, Z.; Schmidt, T.; Heller, D.; Drexler, H.-J.Title full: Crystal structures of 1-2-(dicyclohexylphosphinophenyl)pyrol-2- dicyclohexylphosphino-rhodium(I) norborna-2,5-diene tetrafluoroborate tetrahydrofuran hemisolvate, [Rh(C34H5INP 2)(C7H8)] [BF4] · 0.5C 4H8O, and 1-2-(dicyclohexylphosphinophenyl)-pyrol-2- dicyclohexylphosphino-rhodium(I) (Z,Z)-cycloocta-1,5-diene tetrafluoroborate, [Rh(C34H5INP2)(C8H12)] [BF4]. C43H63BF4NO0.50P2 Rh, monoclinic, P121/n1 (no. 14), a = 10.341(2) Å, b = 16.063(3) Å, c = 27.425(5) Å, β = 98.76(3)°, V= 4502.4 Å3, Z = 4, Rgt(F) = 0.060, wRref(F 2) = 0.143, T = 200 K. C42H63BF 4NP2Rh, monoclinic, P121/c1 (no. 14), a = 10.503(2) Å, b = 17.665(4) Å, c = 21.946(4) Å, β = 101.95(3)°, V= 3983.5 Å3, Z = 4, Rgt(F) = 0.045, wRref(F2) = 0.013, T =200 K. © by Oldenbourg Wissenschaftsverlag,.
- ItemCrystal structure of (η4-norborna-2,5-dien)-(1,2-bis((R,R)-2,5-bis-(methoxymethyl)phospholanyl)benzene)rhodium(I) tetrafluoroborate, [Rh(C22H36O4P2)(C7H8)](BF4)(München : R. Oldenbourg Verlag GmbH, 2004) Holz, J.; Börner, A.; Spannenberg, A.; Pribbenow, C.; Heller, D.; Drexler, H.-J.C29H44BF4O4P2Rh, monoclinic, P21 (no. 4), a= 10.119(2) Å, 6= 14.125(3) Å, c = 11.542(2) Å, β = 106.87(3)°, V = 1578.7 Å3, Z= 2, Rgt(F) = 0.034, wRref(F2) = 0.090, T = 200 K.
- ItemDimethylaminomethylene-α-D-xylo-hept-5-ulofuranurononitrile as building block in the synthesis of 'reversed' C-nucleoside analogues(Berlin : de Gruyter, 2006) Hashmi, I.A.; Feist, H.; Michalik, M.; Reinke, H.; Peseke, K.3-O-Benzyl-6-deoxy-1,2-O-isopropylidene-6-(dimethylaminomethylene) -α-D-xylo-hept-5-ulofuranurononitrile (1) was reacted with amidinium salts, S-methylisothiouronium sulfate, and guanidinium chloride, respectively, in the presence of bases to furnish the 4-(3-O-benzyl-1,2-O-isopropylidene- α-D-xylo-tetrofuranos-4-yl)pyrimidine-5-carbonitriles 2 and the 4-(1,2-O-isopropylidene-α-D-glycero-tetr-3-enofuranos-4-yl) pyrimidine-5-carbonitriles 3, respectively. Treatment of 1 with ethyl 5-aminopyrazole-4-carboxylates yielded the ethyl 7-(3-O-benzyl-1,2-O- isopropylidene-α-D-xylo-tetrofuranos-4-yl)-6-cyanopyrazolo[1,5-a] pyrimidine-3-carboxylates 4 and the ethyl 7-amino-6-(3-O-benzyl-1,2-O- isopropylidene-α-D-xylo-pentofuranuronoyl)pyrazolo[1,5-a] pyrimidine-3-carboxylates 5, respectively. Reaction of 1 with 2-benzimidazolylacetonitrile in the presence of sodium methanolate afforded 1-amino-2-(3-O-benzyl-1,2-O-isopropylidene-α-D-xylo-pentofuranuronoyl) benzo[4,5]imidazo[1,2-a]pyridine-4-carbonitrile (6) and 1-amino-2-(3-deoxy-1,2- O-isopropylidene-α-D-glycero-pent-S-enofuranuronoyl)benzo[4,5]imidazo[1, 2-a]pyridine-4-carbonitrile (7). © 2006 Verlag der Zeitschrift für Naturforschung.
- ItemCrystal structure of (2,3-bis((2R,5R)-2,5-dimethylphosphonalyl)maleic anhydride)-(η4-norbornadiene)-rhodium(I) tetrafluoroborate, [Rh(C7H8)(C16H24O3P 2)] [BF4](Berlin : de Gruyter, 2007) Holz, J.; Börner, A.; Heller, D.; Drexler, H.-J.C23H32BF4O3P2Rh, orthorhombic, P212121 (no. 19), a = 10.147(2) Å, b = 13.246(3) Å, c = 18.827(4) Å, V = 2530.5 Å3, Z = 4, Rgt(F) = 0.025, wRref(F 2) = 0.067, T = 200 K. © by Oldenbourg Wissenschaftsverlag,.
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