Zobrazeno 1 - 10
of 183
pro vyhledávání: '"Manfred Michalik"'
Publikováno v:
Journal of Limnology, Vol 65, Iss 1, Pp 17-26 (2006)
Seasonal variability of dissolved and particulate P forms was investigated in two lakes in Mecklenburg-Western Pomerania (North-East Germany): the polymictic Lake Bützow and the dimictic Lake Dudinghausen. Both lakes had a different trophic status a
Externí odkaz:
https://doaj.org/article/5372504dc4104d4b98f8b67acf211f5f
Publikováno v:
Molecules, Vol 10, Iss 8, Pp 837-842 (2005)
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, tr
Externí odkaz:
https://doaj.org/article/545a646519494bc2a82122e92bacc88c
Autor:
Manfred Michalik, Helmut Reinke, Heinz Dehne, Kerstin Drexler, Anke Scheunemann, Klaus Martens
Publikováno v:
Molecules, Vol 6, Iss 6, Pp 540-550 (2001)
The new S-alkyl thiooxal-1-hydrazono-2-amidrazonium halides 2-4 were synthesized by reaction of the corresponding zwitterionic thiooxalic acid derivatives 1 with alkyl halides in methanol. The structures of compounds 4b and 4d were proven by X-ray st
Externí odkaz:
https://doaj.org/article/e90f7d549b6348be97de61205c67325f
Publikováno v:
Molecules, Vol 5, Iss 3, Pp 245-251 (2000)
1-Methyl-10-nitro-11-phenyl(2-furyl)-2-aza-13-oxa-tricyclo[7.3.1.03,8]trideca-3,5,7-trienes 3 were synthesized via the reduction of the aromatic 2-nitro group of 2-methyl-5-nitro-6-(2-nitrophenyl)-4-phenyl(2-furyl)tetrahydropyranols 2 and subsequent
Externí odkaz:
https://doaj.org/article/6d11fa3e0c58449495f66a43cabdf4d4
Autor:
Imran Ali Hashmi, Helmut Reinke, Holger Feist, Klaus Peseke, Firdous Imran Ali, Manfred Michalik
Publikováno v:
Synthesis. 2007:2819-2822
3- O-Benzyl-6-deoxy-1,2- O-isopropylidene-6-[bis(meth-ylsulfanyl)methylene]-α- D- XYLO-hept-5-ulofuranurononitrile ( 1) was reacted with acetamidinium chloride, S-methylisothiouronium sulfate, and guanidinium chloride, respectively, in the presence
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::daac27609ac51636c4d66db7642ada1e
https://doi.org/10.1055/s-2007-983879
https://doi.org/10.1055/s-2007-983879
Publikováno v:
Zeitschrift für Naturforschung B. 61:406-412
The reaction of methyl 4,6-O-benzylidene-2-deoxy-��-D-erythro- hexopyranosid-3-ulose (1) with ethynylmagnesium bromide in tetrahydrofuran and subsequent trimethylsilylation yielded the methyl 4,6-O-benzylidene-2-deoxy-3-C- ethynyl-3-O-trimethylsi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3a955d11fa087755626eb521e97098f
https://doi.org/10.1515/znb-2006-0406
https://doi.org/10.1515/znb-2006-0406
Publikováno v:
Zeitschrift für Naturforschung B. 61:292-300
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
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a924bfa6fe4c9acd7500f18d1c78fbb9
https://doi.org/10.1515/znb-2006-0309
https://doi.org/10.1515/znb-2006-0309
Publikováno v:
Journal of Carbohydrate Chemistry. 25:19-32
3‐O‐Benzyl‐6‐deoxy‐1,2‐O‐isopropylidene‐α‐d‐xylo‐hept‐5‐ulofuranurononitrile (1) was reacted with N,N‐dimethylformamide dimethylacetal in tetrahydrofuran to furnish the (E)‐3‐O‐benzyl‐6‐deoxy‐6‐dimethylamino
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7afcceb047e790d3867e67286eab8691
https://doi.org/10.1080/07328300500471770
https://doi.org/10.1080/07328300500471770
Autor:
Stephan Enthaler, Matthias Beller, Bernhard Hagemann, Kathrin Junge, Thomas Riermeier, Axel Monsees, Manfred Michalik
Publikováno v:
Advanced Synthesis & Catalysis. 347:1978-1986
17 monodentate phosphepine ligands with a 4,5-dihydro-3H-dinaphtho[2,1-c;1′,2′-e]phosphepine structural motif have been synthesized and tested in the asymmetric hydrogenation of various β-keto esters. By variation of the substituents of the aryl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9407f7703c1ca87c5a82d5c73e519b16
https://doi.org/10.1002/adsc.200505131
https://doi.org/10.1002/adsc.200505131
Autor:
Klaus Peseke, Iran Otero, José Quincoces, Karen Methling, Helmut Reinke, Holger Feist, Manfred Michalik
Publikováno v:
Journal of Carbohydrate Chemistry. 24:809-829
Treatment of 1,2‐dideoxy‐4,5:6,7‐di‐O‐isopropylidene‐D‐xylo‐hept‐1‐yn‐3‐uloses 4a,b with hydrazine hydrate and amidines yielded the 3‐(1,2:3,4‐di‐O‐isopropylidene‐D‐xylo‐1,2,3,4‐tetrahydroxy‐butyl)‐5‐phen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13fa8340a5e94e185e94a5d6d7ebb524
https://doi.org/10.1080/07328300500388693
https://doi.org/10.1080/07328300500388693