| | 1 | Author
| Z. Ah Id, M. Aq, L+-, M. Ashooda, H. Asan, KevinT. Pott, M. Alik++, C., T. Anveer, A., N. Izam Ic, W. Olfgang | Requires cookie* | | | Title
| Syntheses of Anomeric Pairs of New C-Nucleosides via 1,3-Dipolar Cycloaddition Reaction, Part I  | | | | Abstract
| A convenient pathway to a variety of ß-and a-C-nucleosides has been developed by utiliz ing 1,3-dipolar cycloaddition reactions of various exocyclic and endocyclic heterocyclic ylides with ß (5a) and a (5b) anomers of ethyl 3-(2',3'-0-isopropylidene-5'-0-trityl-D-ribofurano-syl) propiolate, respectively. Assignment of configuration at exposition of the C-nucleosides could be made by a comparative study of the properties of corresponding a and ß anomers with a reasonable degree of certainity. | | | |
Reference
| Z. Naturforsch. 52b, 1383—1392 (1997); received July 21 1997 | | | |
Published
| 1997 | | | |
Keywords
| C-Nucleosides, 1, 3-Dipolar Cycloadditions | | | |
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| default:Reihe_B/52/ZNB-1997-52b-1383.pdf | | | | Identifier
| ZNB-1997-52b-1383 | | | | Volume
| 52 | |
| 2 | Author
| WolfPeter Fehlhammer, Bartel Klaus, Dagobert Alfons Völkl, Achatz | Requires cookie* | | | Title
| Metallkomplexe funktioneller Isoeyanide, VI [1] Tosylmethyl-, Benzyl-und Benzhydrylisocyanid-Metallverbindungen und ihre Reaktionen mit Nucleophilen und 1.3-Dipolarophilen Metal Complexes of Functional Isocyanides, VI [1] Tosylmethyl-, Benzyl-and Benzhydrylisocyanide Metal Complexes and Their Reactions with Nucleophiles and 1,3-Dipolarophiles | | | | Abstract
| Metal complexes of the type M(CO)5L (M = Cr, W), MX2L2 (M = Pd, Pt; X = Cl, Br, 1), PtClo(L)PPh3, and [Pt(Cl)(L)(PPh3)2]BF4 have been prepared with L = CNCH2S02C6H4-^CH3, CNCHoPh, and CNCHPho, and reacted with a variety of nucleophiles (NH2CH2C02CH3, CH(CN)2", CH(CN)C02CH3-, OH-) and 1,3-dipolarophiles (CF3CN, CH3O2CCEECCO2CH3, CH2 = CHCN, RNCO (R -CH3, Ph), RCHO (R = i-C3H7, Ph, C6H4-0OH)) to give carbene, a-aminovinyl, and carboxamido complexes, and C2-metallated heterocycles (imidazoles, pyrroles, oxazolos, oxazolines), respectively. Ready de-alkylation occurs of benzhydryl isoeyanide in [Pt(Cl)(CNCHPh2)(PPh3)2]BF4* | | | |
Reference
| Z. Naturforsch. 37b, 1044—1053 (1982); eingegangen am 5. Februar 1982 | | | |
Published
| 1982 | | | |
Keywords
| Transition Metal Complexes of Functionalized Isocyanides, Reactions at Co-ordinated Ligands, Carbene Complexes, 1, 3-Dipolar Cycloadditions | | | |
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| default:Reihe_B/37/ZNB-1982-37b-1044.pdf | | | | Identifier
| ZNB-1982-37b-1044 | | | | Volume
| 37 | |
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