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  • Inorganic Chemistry  (5)
  • Black-tailed deer  (4)
  • mammals  (4)
  • 1
    Electronic Resource
    Electronic Resource
    The “deer lactone” (1978)
    Springer
    Journal of chemical ecology 4 (1978), S. 247-256 
    Details
    ISSN: 1573-1561
    Keywords: Black-tailed deer ; “deer lactone” ; discrimination ; enantiomers ; (Z)-4-hydroxy-6-dodecenoic acid lactone ; Odocoileus hemionus columbianus ; lactone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Urine of the black-tailed deer is the source of the “deer lactone,” which is deposited on the tarsal gland tufts by “rub-urination.” The enantiomer composition of the lactone from the urine of the female is 89(R)-(−)/11(S)-(+). Responses by deer were strongest toward the synthetic racemic lactone in the social test and toward the natural lactone in the choice test. In both tests, the (−)- lactone released slightly stronger responses than its enantiomer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00988059
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  • 2
    Electronic Resource
    Electronic Resource
    Subspecies specificity of response to a mammalian social odor (1975)
    Springer
    Journal of chemical ecology 1 (1975), S. 125-131 
    Details
    ISSN: 1573-1561
    Keywords: deer ; mammals ; odor preference ; odor specificity ; olfactory discrimination ; pheromone ; sexual isolation ; social odor ; tarsal scent
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Two subspecies of deer, black-tailed deer (Odocoileus hemionus columbianus) and Rocky Mountain mule deer (O. h. hemionus) were exposed to the tarsal scents of both subspecies in a social setting. The scent was sprayed on one individual in a group. The responses, consisting of sniffing, licking, and following, were stronger to each subspecies' own tarsal scent. This discrimination may be important for sexual isolation in areas where the ranges of the two species overlap.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987725
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  • 3
    Electronic Resource
    Electronic Resource
    Response to a mammalian pheromone and its geometric isomer (1976)
    Springer
    Journal of chemical ecology 2 (1976), S. 389-398 
    Details
    ISSN: 1573-1561
    Keywords: Black-tailed deer ; geometric isomers ; (E) and (Z)-4-hydroxy-6-dodecenoic acid lactone ; mammals ; Odocoileus hemionus columbianus ; olfactory discrimination ; pheromones ; stereoisomers ; tarsal scent
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Black-tailed deer (Odocoileus hemionus columbianus) discriminate between the geometric isomers of a lactone used as a pheromone by the species. They react strongly to (Z)-4-hydroxy-6-dodeceonic acid lactone, which occurs in their tarsal scent, but the response to theE isomer did not differ from the response to the solvent. The isomers were applied to one member of a group of freely interacting deer, and the sniffing, licking, and following responses were recorded. The synthesis of the geometric isomers of the lactone is described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00988284
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  • 4
    Electronic Resource
    Electronic Resource
    Seasonal changes in Flehmen to constant urine stimuli (1980)
    Springer
    Journal of chemical ecology 6 (1980), S. 905-909 
    Details
    ISSN: 1573-1561
    Keywords: Black-tailed deer ; deer ; Flehmen ; mammals ; pheromones ; reproductive behavior ; urine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Male black-tailed deer were exposed to conspecific urine samples monthly for one year. The urine samples tested were from adult male, nonestrous female, estrous female, male fawn, and female fawn. The urine was offered with and without a wire screen cover; Flehmen occurred only when direct mouth and/or tongue contact with the urine was possible. The frequency of Flehmen varied seasonally, and urine from adults released more Flehmen than urine from fawns. But there was no difference in Flehmen frequency in response to urine from adult males or estrous or nonestrous females, when presented out of context, although in a natural situation males respond more to urinating females than males.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00990474
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  • 5
    Electronic Resource
    Electronic Resource
    The caudal gland in reindeer (Rangifer tarandus L.): Its behavioral role, histology, and chemistry (1977)
    Springer
    Journal of chemical ecology 3 (1977), S. 591-601 
    Details
    ISSN: 1573-1561
    Keywords: caudal gland ; cervids ; deer ; mammals ; pheromones ; Rangifer tarandus ; reindeer ; scent communication ; scent gland ; skin gland ; tail gland
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Behavior observations in European reindeer (Rangifer tarandus) showed a high frequency of sniffing the tails of conspecifics. A caudal gland was found, and it is the largest skin gland inRangifer. Behavioral contexts of tail sniffing, the histology of the gland, and some aspects of the composition of the volatiles in the gland's secretion are described.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00989079
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  • 6
    Electronic Resource
    Electronic Resource
    Übergangsmetallaktivierte organische Verbindungen, XXXVII. über eine neue Aldehyd-und Ketonreaktion: Synthese und spektroskopische Untersuchung von α1-Phosphonioalkoxy-übergangsmetallkomplexenHerrn Professor Ulrich Schöllkopf zum 65. Geburtstag gewidmet. (1993)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 126 (1993), S. 453-457 
    Details
    ISSN: 0009-2940
    Keywords: Aldehydes ; Ketones ; Titanium complexes ; Niobium complexes ; Tantalum complexes ; Phosphonium chlorides ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Transition Metal-Activated Organic Compounds, XXXVII[1].  -  A Novel Reaction of Aldehydes and Ketones: Synthesis and Spectroscopic Investigation of α1-Phosphonioalkoxy Transition Metal ComplexesHerrn Professor Ulrich Schöllkopf zum 65. Geburtstag gewidmet.By treatment of aldehydes and ketones with one mole equivalent of a Lewis acid (TiCl4, NbCl5, TaCl5) and one mole equivalent of PPh3, or in one case of Ph2PCH2CH2PPh2, the aldehyde derivates [R1CH(P+Ph2R2)-OMCln]Cl- (4-8; M=Ti, Nb, Ta; R2=Ph or CH2CH2PPh2) and the ketone derivatives [R1R2C(P+Ph3)-ONbCl4]Cl- (9-10) were prepared. Complexes 4-10 were isolated as air-and water-sensitive solids. According to the NMR spectra some of the obtained aldehyde derivatives 4-8 exist in solution as a mixture of isomers or oligomers, whereas the ketone derivatives 9 and 10 form in solution an equilibrium with the free ketone and the complex NbCl5 · PPh3. The chloride ion of 4-10 is perhaps coordinated to the metal.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19931260224
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  • 7
    Electronic Resource
    Electronic Resource
    Fully Chlorinated N-Silyl Amides of Titanium and Tungsten  -  Crystal Structure of Cl3SiNW(Cl3)N(SiCl3)2 (1997)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 130 (1997), S. 701-704 
    Details
    ISSN: 0009-2940
    Keywords: N-Silyl amides ; Precursor ; 14N-NMR ; Titanium ; Tungsten ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The reaction of hexachlorodisilazanyllithium (Cl3Si)2NLi (1), with TiCl4 leads selectively to the novel fully chlorinated amides (Cl3Si)2NTiCl3 (2) or [(Cl3Si)2N]2 TiCl2 (3), respectively, depending on the molar ratio of the starting materials. The analogous reaction of 1 with WCl6 yielded the amide imide Cl3SiN=W(Cl3)N(SiCl3)2 (5) by elimination of SiCl4. The relative amounts of the starting materials had no effect on the formation of 5. 14/15N- and 29Si-NMR data on the starting materials and products show significantly different effects, when compared with those of analogous N-trimethylsilyl derivatives, due to the lower energy of the electrons in the N—Si and N—M ß bonds. The crystal structure of 5 (triclinic, space group P1) was determined by X-ray structure analysis.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19971300605
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  • 8
    Electronic Resource
    Electronic Resource
    Übergangsmetallaktivierte organische Verbindungen, XXXVIII. Chemoselektive nucleophile Methylierungen durch In-Situ-Blockierung von Aldehydgruppen unter α1-Phosphonioalkoxid-BildungHerrn Professor Ulrich Schöllkopf zum 65. Geburtstag gewidmet. (1993)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 126 (1993), S. 459-464 
    Details
    ISSN: 0009-2940
    Keywords: Chemoselectivity ; Titanium complexes ; Niobium complexes ; Tantalum complexes ; Methylation of aldehydes and ketones ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Transition Metal-Activated Organic Compounds, XXXVIII[1].  -  Chemoselective Nucleophilic Methylation Reactions by In-Situ-Blocking of Aldehyde Groups by α1-Phosphonioalkoxide FormationHerrn Professor Ulrich Schöllkopf zum 65. Geburtstag gewidmet.For the selective methylation of a keto group in the presence of an aldehyde group the complex MeTiCl3·PPh3 and especially the reagent system [TiC]4·PPh3 + 0.5 Me2Zn] proved to be favourable. For instance, 6-oxoheptanal (8) was methylated by [TiCl4·PPh3 + 0.5 Me2Zn] at the keto group with 89% yield and 99:1 selectivity, whereas it was methylated by [TiCl4 + 0.5 Me2Zn] at the aldehyde group with 81% yield and 96:4 selectivity. A selective methylation of benzaldehyde in the presence of heptanal was achieved with MeNbCl4·PPh3 or [NbCl5·PPh3 + 0.75 Me2Zn] to give (1-chloroethyl)benzene (14; yield 92 or 53%; selectivity in each case 93:7) or with [TaCl5·PPh3 + 1.5 Me2Zn] to give mainly 1-phenylethanol (15) besides 16. A 96:4-selective benzylation (yield 74%) of a ketone in the presence of an aliphatic aldehyde was possible with [TiCl4·PPh3 + 1 PhCH2MgBr].  -  The high chemoselectivity is caused by irreversible blocking of aliphatic aldehyde groups by α1-phosphonioalkoxide formation[1], whilst the corresponding reaction of keto groups[1] and of benzaldehyde is reversible.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19931260225
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  • 9
    Electronic Resource
    Electronic Resource
    Urine fractions that release flehmen in black-tailed deer,Odocoileus hemionus columbianus (1984)
    Springer
    Journal of chemical ecology 10 (1984), S. 203-215 
    Details
    ISSN: 1573-1561
    Keywords: Black-tailed deer ; Odocoileus hemionus columbianus ; urine ; Flehmen ; deer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Flehmen (or “lipcurl”) is a response of male mammals primarily to female urine, performed primarily during the reproductive season. To elucidate the components of female urine that release the Flehmen, urine of black-tailed deer (Odocoileus hemionus columbianus) was fractionated, and the fractions were presented to captive male conspecifics during three rutting seasons. The active principle (one or more compounds) is watersoluble, of low volatility, not readily extractable with organic solvents, and between 200 and 12,000 daltons in molecular weight. Several urine components were identified, but none of these showed activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987849
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  • 10
    Electronic Resource
    Electronic Resource
    Reaction of Hexamethyldisilazane with Borane in Tetrahydrofuran (1996)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 2048-2052 
    Details
    ISSN: 0044-2313
    Keywords: Borane ; diborane ; borazine ; NMR spectroscopy ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reaktion von Hexamethyldisilazan mit Boran in TetrahydrofuranHexamethyldisilazan 1 reagiert mit Boran in Tetrahydrofuran (THF—BH3, 2) zunächst unter Bildung des Addukts (Me3Si)2NH—BH3 (3), das dann entweder in N,N-Bis(trimethylsilyl)-μ-aminodiboran(6) 5 oder in eine Mischung aus 5 und N-Trimethylsilyl-μ-aminodiboran(6) 6 übergeht, abhängig von den Reaktionsbedingungen. Die Verbindungen 5 und 6 lassen sich quantitativ in das N,N′,N″-Tris(trimethylsilyl)borazin 4 überführen. Dabei werden drei Zwischenstufen identifiziert, nämlich N,N-Bis(trimethylsilyl)aminoboran 7, N,N-Bis(trimethylsilyl)amino(N′-trimethylsilylamino)boran 8 und N-Trimethylsilylaminoboran-Trimer 9. Alle Produkte und Zwischenstufen wurden mittels Multikern-NMR-Spektroskopie charakterisiert, und Kopplungskonstanten 1J(29Si, 15N) in 5 und 6 wurden mit der Hahn-echo extended (HEED) INEPT Pulssequenz in den 29Si NMR Spektren bestimmt.
    Notes: Hexamethyldisilazane 1 reacts with borane in tetrahydrofuran (THF—BH3, 2) first by formation of an adduct (Me3Si)2NH—BH3 (3), and then either to the N,N-bis-(trimethylsilyl)-μ-aminodiborane 5 or to the mixture of 5 and N-trimethylsilyl-μ-aminodiborane(6) 6, depending on the reaction conditions. The compounds 5 and 6 can be quantitatively converted to the N,N′,N″-tris(trimethylsilyl)borazine 4. Three intermediates can be identified, namely N,N-bis(trimethylsilyl)borane 7, N,N-bis(trimethylsilyl)amino(N′-trimethylsilylamino)borane 8 and N-trimethylsilylaminoborane-trimer. All products and intermediates were characterized by multinuclear NMR spectroscopy, and coupling constant 1J(29Si, 15N) were measured from 29Si NMR spectra by using the Hahn-echo-extended (HEED) INEPT pulse sequence.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19966221208
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