Go toArchive
Browse byFacets
Bookbag ( 0 )
'7' in keywords
Results  10 Items
Sorted by   
Publication Year
1996 (2)
1992 (2)
1990 (1)
1981 (1)
1978 (1)
1976 (1)
1975 (1)
1974 (1)
1Author    Tetratertiary Phosphine, R.B K, P.R H, J.C CRequires cookie*
 Title    Isomerism in the Linear  
 Abstract    Isom erism , P hosphines, Linear tetratertiary phosphine, 1,1,4,7,10,10 -H exap h en y 1 -1,4,7,10 -tetraphosphadecane 
  Reference    (Z. Naturforsch. 29b, 574—575 [1974]; received M arch 4 1974) 
  Published    1974 
  Keywords    4, 7, 1 0, 10-Hexaphenyl-l, 4, 7, 10-Tetraphos-phadecane 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/29/ZNB-1974-29b-0574_n.pdf 
 Identifier    ZNB-1974-29b-0574_n 
 Volume    29 
2Author    CarlD H, A. Ndreas, H. Eineb, D. Ietm, S. Talkeb, G. Eorge, M. SheldrickbRequires cookie*
 Title    Synthese und Eigenschaften von l  
 Abstract    Sulfurdiimides, 2,7,3,6-Tetrahydrobenzo[b]-l,2,7,3,6-thiadiazadiborepines, 1,2,4-Trithia-3,5-diborolanes, 2,5-D ihydrobenzo[b]-1,2,5-thiadiboroles 2,5-Bisdim ethylam ino-2,5-dihydrobenzo[b]-l,2,5-thiadiborole (2) has been obtained from the diiodine-derivative by reaction with dimethyl-aminotrimethylsilane. Reaction o f 2 or 2,5-bisdim ethylam ino-r,2'-dim ethyl-2,5-dihydrobenzo[b]-thiadiborole with di-rer/-butyl-, tert-butyl-trimethylsilyl-and bistrimethylsilyl-sulfurdiimide yields the 2,7,3,6-tetrahydrobenzo[b]-1,2,7,3,6-thiadiazadiborepines (3a-3e). 'H, "B, l3C N M R , MS and analytical data and results o f analysis are given. For 3 a the X-ray structure is reported. 
  Reference    Z. Naturforsch. 47b, 697—7 (1992); eingegangen am 24. Juni 1991 
  Published    1992 
  Keywords    2, 7, 3?6-Thiadiazadiborepinen, Kristallstruktur des 2, 7-Di-terf-butyl-3, 6-dimethyl-3, 6-dihydrobenzo-1, 2, 7, 3, 6-thiadiazadiborepins Syntheses and Properties o f 1, 2, 7, 3, 6-T hiadiazadiborepines, C rystal Structure o f 2, 7-D i-teT /-butyl-3, 6-dim ethyl-3, 6-dihydrobenzo-l, 2, 7, 3, 6-thiadiazadiborepin 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/47/ZNB-1992-47b-0697.pdf 
 Identifier    ZNB-1992-47b-0697 
 Volume    47 
3Author    Z. NaturforschRequires cookie*
 Title    Elektronentransfer und Ionenpaar-Bildung  
 Abstract    , 47 [1] Titrationen von 1,2,4,5-Tetracyanbenzol und 7,7,8,8-Tetracyan-/;-chino-dimethan mit Natriummetall in aprotischen Lösungen E le ctro n T ran sfer an d Ion P air F o rm atio n , 47 [ 1 ] T itratio n s o f 1,2 ,4 ,5 -T etracy an o b en zen e and 7 ,7 ,8 ,8 -T etracy an o -/?-q u in o d im eth an e w ith S o d iu m M etal in A p ro tic S o lu tio n s H an s B ock*, M a rk u s K leine 
  Reference    Z. Naturforsch. 51b, 1215—1221 (1996); eingegangen am 25. Januar 1996 
  Published    1996 
  Keywords    1, 2, 4, 5-Tetracyanobenzene, 7, 7, 8, 8-Tetracyano-/?-quinodimethane, Sodium Metal Reduction, UV/VIS Spectra 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-1215.pdf 
 Identifier    ZNB-1996-51b-1215 
 Volume    51 
4Author    M. Iinuma, T. Tanaka, M. Mizuno, E. WollenweberRequires cookie*
 Title    Unusual Flavanone from Encelia stenophylla  
 Abstract    A flavanone with 3'-OH as the sole B-ring substituent has been reported recently as a leaf and stem exudate constituent o f Encelia stenophylla. The correctness o f this unusual substitution is confirmed by synthesis o f this flavanone. 
  Reference    Z. Naturforsch. 45c, 135 (1990); received October 9 1989 
  Published    1990 
  Keywords    5, 7, 3'-Trihydroxy Flavanone, Unusual Substitution, Synthesis, Structure Confirmation 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_C/45/ZNC-1990-45c-0135_n.pdf 
 Identifier    ZNC-1990-45c-0135_n 
 Volume    45 
5Author    Marianne Baudler, Elmar TollsRequires cookie*
 Title    Beiträge zur Chemie des Phosphors, 84 [1] 1.2.3-Trimethyl  
 Abstract    The reaction of K2(PMe)4 • 2 THF with eis-1,2-dichloroethylene yields the hitherto unknown cyclocarbaphosphanes 1,2,3-trimethyl-1,2,3-triphosphole, (PMe)3C2H2 (1), and 2,3,4,6,7,8-hexamethyl-2,3,4,6,7,8-hexaphosphabicyclo[3,3,0]octane, (PMe)6C2H2 (2). Besides, (PMe)s, (PMe)4CH2, (PMe)3C2Hi, and the new six-membered heterocycle (PMe)2(C2H2)2 are formed. The cyclocarbaphosphanes 1 and 2 were characterized by elemental analysis, mass, IR, Raman, and NMR spectra. For the bicyclic compound 2 two diastereomers were obtained and separated. They differ in the position of the methine hydrogens and of the methyl substituents (eis-2 and trans-2). Compound 2 is also produced in the reaction of K2(PMe)4 • 2 THF with £rans-l,2-dichloroethylene whereas with 1,1,2,2- tetrachloroethane mainly (PMe)s is formed. In 1 and in each of thefive-memberedrings of cis-2 and trans-2 the methyl substituents at adjacent phosphorus atoms are situated on opposite sides of the ring. 
  Reference    Z. Naturforsch. 33b, 691—697 (1978); eingegangen am 24. April 1978 
  Published    1978 
  Keywords    3-Trimethyl-1, 2, 3-triphosphole, (PMe)3C2H2, and 2, 3, 4, 6, 7, 8-Hexamethyl-2, 3, 4, 6, 7, 8-hexaphosphabicyclo[3, 3, 0]oetane, (PMe)6C2H2 l, 2, 3-Trimethyl-l, 2, 3-triphosphole, l, 2, 3-Trimethyl-cyclo-4, 5-dicarba-4-en-l, 2, 3-triphosphane, Hexaphosphabicyclo[3, 3, 0]octanes (eis and trans), Cyclocarbaphosphanes, Heterocyclophosphanes 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-0691.pdf 
 Identifier    ZNB-1978-33b-0691 
 Volume    33 
6Author    E. Ckhard, W. Ollenw Eber, K. Arin, M. AnRequires cookie*
 Title    A M yricetin Tetram ethyl Ether from the L eaf and Stem Surfaces o f Tillandsia usneoides  
 Abstract    Myricetin-3,7,3',4'-tetramethyl ether has been isolated as an aglycone from the acetone wash of Tillandsia usneoides. It is thus shown to be deposited externally, on leaf and stem surfaces. We suggest that the previously re­ ported lipophilic flavonoids from this and other species are also exudate constituents. 
  Reference    Z. Naturforsch. 47c, 638—639 (1992); received May 5 1992 
  Published    1992 
  Keywords    Tillandsia usneoides, Bromeliaceae, Exudate Flavonoids, Myricetin-3, 7, 3', 4'-tetramethyl Ether 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_C/47/ZNC-1992-47c-0638_n.pdf 
 Identifier    ZNC-1992-47c-0638_n 
 Volume    47 
7Author    Rudolf Hansel, Faeis Khaliefi, Andrew PelterRequires cookie*
 Title    3.5-Dihydroxy  
 Abstract    6.7.8-trimethoxyflavon aus Heiichrysum graveolens: Bestätigung der Konstitution Confirmation of the Structure of an Extractive from Helichrysum graveolens as 3,5-Dihydroxy-6,7,8-trimethoxyflavone 
  Reference    Z. Naturforsch. 36b, 1171—1172 (1981); eingegangen am 12. Mai 1981 
  Published    1981 
  Keywords    3, 5-Dihydroxy-6, 7, 8-trimethoxyflavone, Isomeric a-Hydroxybenzalcumaranone, X ray, NMR Spectra 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-1171.pdf 
 Identifier    ZNB-1981-36b-1171 
 Volume    36 
8Author    Stephan Friederichs, Jens Kudnig, Günter KlarRequires cookie*
 Title    Elementorganische Verbindungen mit o-Phenylenresten, XXVIII [1] Charge-transfer  
 Abstract    Komplexe von 2,3,7,8-Tetraalkoxy-chalkogenanthrenen mit 7,7,8,8-Tetracyan-2,3?5,6-tetrafluor-chinodimethan Organometalloidal Compounds with o-Phenylene Substituents, Part XXVIII [1] Charge-Transfer Complexes of 2,3,7,8-Tetraalkoxy-chalcogenanthrenes wjth 7.7.8.8-Tetracyano-2,3,5,6-tetrafluoro-quinodimethane -selenanthrene, as well as -tetraethoxythianthrene gi­ ve isostructural 1:1 charge-transfer complexes with 7,7,8,8-tetracyano-2,3,5,6-tetrafluoro-quinodimethane. In the columnar crystal structures there are alternating donor and acceptor molecules. The chalcogenanthrene molecules which are folded at their E -E axes in the pure state, are planar in the complexes indicating a charge-transfer according to [donor]+ [acceptor]-. Consecutive molecules of the stacks are arranged in such a way that an optimum overlap of the HOMO of the donor and the LUMO of the acceptor, both of which are of 7T-type character according to MNDO calculations, is secured. 
  Reference    Z. Naturforsch. 51b, 1295—1300 (1996); eingegangen am 1. April 
  Published    1996 
  Keywords    Tetracyano-2, 3, 5, 6-tetrafiuoro-quinodi-methane, 1:1 Charge-Transfer Complexes, Columnar Structures, MNDO Calculations 2, 3, 7, 8-Tetramethoxythianthrene and 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_B/51/ZNB-1996-51b-1295.pdf 
 Identifier    ZNB-1996-51b-1295 
 Volume    51 
9Author    Armin Traub, Hans GeigerRequires cookie*
 Title    Nachweis  
 Abstract    von 2.5.7.3/.4,-Pentahydroxy-flavanon-5-glucosid in den Samen von G a le g a o f f ic in a lis L. (Fabaceae) Detection of 2,5,7,3/,4/-Pentahydroxy-flavanone-5-glucoside in the Seeds of Galega officinalis L. (Fabaceae) 
  Reference    (Z. Naturforsch. 30c, 823 [1975]; eingegangen am 14. Juli 1975) 
  Published    1975 
  Keywords    Galega officinalis L, Fabaceae, 2, 5, 7, 3', 4'-Pentahydroxy flavanon, 2, 4, 6, 3', 4'-Pentahydroxydibenzoylmethane, Flavonoids, Glycosides 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_C/30/ZNC-1975-30c-0823_n.pdf 
 Identifier    ZNC-1975-30c-0823_n 
 Volume    30 
10Author    Boris Janistyn, M. Artha StockerRequires cookie*
 Title    Enzymatischer Abbau von [Ring B-U-14C]-5.7.3'.4'-Tetrahydroxy- flavanon-7-O-glucosid zu 5.7-Dihydroxychromon-7-0-glucosid und [Ring-U-14C]-1.2.4-Trihydroxybenzol mit einem zellfreien Extrakt von Mentha longifolia Enzymatic D egradation of [Ring B-U-14C] -S ^S ^'-tetrahydroxyflavanone-T -O - glucoside to 5,7-Dihydroxychromone-7-0-glucoside and [Ring-U-14C]-1,2,4-trihy- droxybenzene with a Cell Free System from M entha longifolia  
  Reference    (Z. Naturforsch. 31c, 408 [1976]; eingegangen am 12. April 1976) 
  Published    1976 
  Keywords    Flavanone Degradation, [Ring B-U-14C]-5, 7, 3', 4'-tetrahydroyflavanon-7-0-glucoside, Chromone Formation 
  Similar Items    Find
 DEBUG INFO      
 TEI-XML for    default:Reihe_C/31/ZNC-1976-31c-0408.pdf 
 Identifier    ZNC-1976-31c-0408 
 Volume    31