| | 1 | Author
| M. Onoheteroarylborates [, Norbert Kuhn3, Heike Kotowski3, Dieter Bläserb, Roland Boeseb | Requires cookie* | | | Title
| Monoheteroarylborate [1]  | | | | Abstract
| The heteroaryl borates Li[C4Me4NBH3] (6) and Na[C3H 3N2(BMe3)2]* 2 C4HgO (8) are ob tained by treatment of Li[C4Me4N] and Na[C3H3N2] with Me2S • BH3 and BMe3, respectively. The X-ray structure of [Na(C4H 80) 6][C3H 3N 2(BM e3)2] (10) is reported. | | | |
Reference
| Z. Naturforsch. 52b, 351—354 (1997); eingegangen am 28. Oktober 1996 | | | |
Published
| 1997 | | | |
Keywords
| Borates, Pyrroles, Imidazoles, X-Ray | | | |
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| default:Reihe_B/52/ZNB-1997-52b-0351.pdf | | | | Identifier
| ZNB-1997-52b-0351 | | | | Volume
| 52 | |
| 2 | Author
| 2. 2., Z. Naturforsch | Requires cookie* | | | Title
| | | | | Abstract
| -/erf-butyI-3,3'-bis(tri-m e th y lsily l)-l,l'-diazacobaltocen [1 ] 2.2..5.5'-Tetra-terr-butyl-3,3,-bis(tri-m eth y lsily l)-l,r-d iazaco b alto cen e [1] N o rb ert K uhn3 *, Stefan S tubenrauchb, D ieter B läserc, R oland B oesec The 1,1'diazacobaltocene pyr2Co (3) is obtai ned from the reaction of 2,5-di-terr-butyl-3-trime-thylsilylpyrrole (pyrH, 2) and CoCl2. The X-ray structure is reported. | | | |
Reference
| Z. Naturforsch. 54b, 424—426 (1999); eingegangen am 5. November 1998 | | | |
Published
| 1999 | | | |
Keywords
| Heterocycles, Pyrroles, Cobalt X-Ray Data | | | |
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| default:Reihe_B/54/ZNB-1999-54b-0424_n.pdf | | | | Identifier
| ZNB-1999-54b-0424_n | | | | Volume
| 54 | |
| 3 | Author
| Rosa Carballo3, Alfonso Castiñeirasb, Teresa Pérezb | Requires cookie* | | | Title
| Group 12 Metal Complexes of 2-Formylpyrrole-(4PLx) and 2-Acetylpyrrole-N(4)-phenylthiosemicarbazone (4P12), as Examples form Different Donor Modes. Crystal and Molecular Structures of [Hg(4PLr H)Br]2 and [Zn(4PL2)2Br2] * 2 EtOH | | | | Abstract
| The reactions of 4N-phenyl-2-[ 1 -(pyrrol-2-yl)methylidene]-hydrazine carbothioamide (4PLi) and 4 Ar-phenyl-2-[l-(pyrrol-2-yl)ethylidene]-hydrazine carbothioamide (4PL2) with Group 12 metal halides afford complexes of types [M(L)2Xi] [M = Zn, L = 4PLi or 4PL2, X = Cl, Br or I; M = Cd, L = 4PL, and X = Cl, or L = 4PL2 and X = Cl, Br or I] and [M(L)X2] [M = Cd, L = 4PLi, X = Br or I; M = Hg, L = 4PLi or 4PL2, X = Cl, Br or I]. The new compounds were characterized by elemental analysis, FAB mass spectrometry, IR spectroscopy, and, in the case of sufficiently soluble compounds, 'H, l3C and, when appropriate, ll3Cd or 199Hg NMR spectrometry. The structures of [Hg(4PLi-H)Br] and [Zn(4PL2)2Br2] • 2 EtOH were also studied by single-crystal X-ray diffractometry. In [Hg(4PL|-H)Br] crystallized from the mother liquor of its synthesis, 4PLi behaves as a monodeprotonated S,iV-bidentate ligand. Otherwise, with Hg(II), Zn(II) and Cd(II), 4PLi and 4PL2 both behave as neutral S-monodentate ligands. | | | |
Reference
| Z. Naturforsch. 56b, 881—888 (2001); received June 12 2001 | | | |
Published
| 2001 | | | |
Keywords
| Pyrrole, Thiosemicarbazones, Group 12 Metal Complex | | | |
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| default:Reihe_B/56/ZNB-2001-56b-0881.pdf | | | | Identifier
| ZNB-2001-56b-0881 | | | | Volume
| 56 | |
| 4 | Author
| Karl Heinz, Ö. Tz, +., Jörg Glänzer | Requires cookie* | | | Title
| Reaktionen von Komplexliganden, LVI [1]. 3-Pyrrolylcarben-Komplexe des Chroms: Darstellung und neuartige Carbenanellierung zum Isoindol-Gerüst Reactions o f Complex Ligands, LVI [1], 3-Pyrrolylcarbene Complexes of Chrom ium: Synthesis and Carbene Annulation to the Isoindole Skeleton | | | | Abstract
| -bromo-2,5-dimethylpyrrols, accessible from low-temperature brom ination using NBS or BTMABT, have been modified into pentacarbonyl[methoxy(3-pyrrolyl-car-bene)] complexes via sequential halogen/lithium exchange, addition to hexacarbonyl chro mium and alkylation. These com pounds react with alkynes and amines, resp., to give amino-lysis and annulation products. The carbene annulation methodology has been exploited in the synthesis of a persubstituted isoindoloquinone. | | | |
Reference
| Z. Naturforsch. 48b, 1595—1602 (1993); eingegangen am 5. April 1993 | | | |
Published
| 1993 | | | |
Keywords
| Pyrroles, /?-Metalation, Pyrrolylcarbene Complexes, Isoindoles N-Protected 3 | | | |
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| default:Reihe_B/48/ZNB-1993-48b-1595.pdf | | | | Identifier
| ZNB-1993-48b-1595 | | | | Volume
| 48 | |
| 5 | Author
| Lu | Requires cookie* | | | Title
| Synthesis of N,C,C-Trilithio-2,5-diaIlyl- pyrrole and its Solvent-Controlled Reactions with Electrophiles | | | | Abstract
| te d so lu tio n s ca n b e co o led to -80 °C w ith o u t p rec ip ita tio n . B e rn d W ra c k m e y e r5 5 B e rn d Schw arze Iris O rd u n g , 2,5-Diallylpyrrole 1 reacts with an excess of "BuLi in hexane/diethylether to give the N,C,C-trilithio reagent 2. 7Li NMR spectra of 2 in THF/ HMPTA at low tem perature indicate the pres ence of an ionic species. Reactions of 2 in TH F with electrophiles such as H 20 , D20 , Mel, Me3SiCl and Me3SnCl lead selectively to the cis-isomers 3a -6 a, whereas the analogous reactions in hexane or diethylether afford mixtures contain ing both cis-and rram-isomers (e.g. 3b). | | | |
Reference
| Z. Naturforsch. 52b, 427—430 (1997); received November 5 1996 | | | |
Published
| 1997 | | | |
Keywords
| Pyrrole, Solvent Controlled Reactions, NMR Spectra | | | |
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| default:Reihe_B/52/ZNB-1997-52b-0427_n.pdf | | | | Identifier
| ZNB-1997-52b-0427_n | | | | Volume
| 52 | |
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