Zobrazeno 1 - 10
of 530
pro vyhledávání: '"Hans Jürgen Bestmann"'
Autor:
Hans Jürgen Bestmann, Otto Vostrowsky
Publikováno v:
CRC Handbook of Natural Pesticides ISBN: 9780429487194
CRC Handbook of Natural Pesticides
CRC Handbook of Natural Pesticides
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb248c738acb48b2af3f1e1cb46c1add
https://doi.org/10.1201/9780429487194-3
https://doi.org/10.1201/9780429487194-3
Autor:
H. Saalbaum, Hans Jürgen Bestmann
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 88:951-956
Phosphinealkylenes 1 react with COS to give betaines 14. Their reaction with alkyl halides 4 generates phosphonium salts 15 which, for R2H, can be easily converted into the phosphoranes 17. The corresponding thiolesters 19 of α,β-unsaturated carbox
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51135a3059c4d376eaf47a31865449df
https://doi.org/10.1002/bscb.19790881116
https://doi.org/10.1002/bscb.19790881116
Autor:
Hans Jürgen Bestmann
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 90:519-533
Epoxides, nitril oxides and carbonyl compounds react with alkylidene triphenylphosphoranes by cycloaddition to PV-heterocycles with a P-O-bond. The latter collapse according to a general reaction scheme, among others allowing a new interpretation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::322689238628f141e482f3655abfd05b
https://doi.org/10.1002/bscb.19810900602
https://doi.org/10.1002/bscb.19810900602
Publikováno v:
Zeitschrift für Angewandte Entomologie. 88:307-312
Studies on the attractiveness of sex attractants towards Tortrix viridana L. and Panolis flammea Schiff. In a broadscale field-screening test it could be shown, that (Z)-9-tetradeeenyl acetate (I) or (Z)-9, (E)-12-tetradecadienyl acetate (II) could b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ac2ab61e7067e6ff9efff27210b4e04
https://doi.org/10.1111/j.1439-0418.1979.tb02506.x
https://doi.org/10.1111/j.1439-0418.1979.tb02506.x
Publikováno v:
Liebigs Annalen. 1996:845-851
Phosphane Alkylenes, 55.— Reactions of Alkylidenetriphenylphosphoranes with Nitrating Reagents The reaction of phosphonium ylides 1 with N2O4 (2) is strongly influenced by the natur of the substituents of the starting ylide. Formation of α-nitro-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::762a8fcbade76555a631adeb191d9d0a
https://doi.org/10.1002/jlac.199619960532
https://doi.org/10.1002/jlac.199619960532
Publikováno v:
Chemoecology. 13:113-122
By means of gas chromatography, gas chromatographic coupled mass spectrometry and behavioral analysis the major trail pheromone components from the hindgut of the formicine species Camponotus castaneus, C. balzani and C. sericeiventris were identifie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::30582320107a62516ba3336c6c4c791f
https://doi.org/10.1007/s00049-003-0237-1
https://doi.org/10.1007/s00049-003-0237-1
Autor:
Thomas Röder, Oliver Clem, Scott Gibson, Ajith Kumar, Hans Jürgen Bestmann, Mark E. Balkovich, Andreas Groß, R. Alan Aitken, Nouria A. Al-Awadi
Publikováno v:
European Journal of Organic Chemistry. 2003:840-847
Both ketone- and ester-stabilised phosphorus ylides undergo Michael addition to vinyl ketones to give the β,δ′-dioxo ylides 3 and 5, respectively, although in the latter case careful temperature control is required to avoid an undesired side-reac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac9dc1cae10dd7b17e4a15b61fa96f84
https://doi.org/10.1002/ejoc.200390127
https://doi.org/10.1002/ejoc.200390127
Publikováno v:
CHEMOECOLOGY. 12:15-21
We investigated cuticular hydrocarbons and fatty acids of workers and queens from two ant species, Leptothorax acervorum and L. gredleri. Cuticular compounds were extracted from single ants by solvent extraction, solid sampling, and solid phase micro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc1877c2bed8edc02a1d2d006d3e6f4d
https://doi.org/10.1007/s00049-002-8322-4
https://doi.org/10.1007/s00049-002-8322-4
Autor:
Jürgen Heinze, J. Tentschert, Bert Hölldobler, Hans‐Jürgen Bestmann, Jacques H. C. Delabie, K. Kolmer
Publikováno v:
Naturwissenschaften. 88:175-178
Queens of the neotropical ponerine ant Pachycondyla cf. 'inversa' may co-operate during colony founding. One of several co-founding queens specializes in foraging, whereas the others remain in the nest and guard the brood. Division of labor is achiev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f235d7bcaf2602a6ce4bbf7ebb2abaf
https://doi.org/10.1007/s001140100218
https://doi.org/10.1007/s001140100218
Publikováno v:
Chemoecology. 11:67-73
Worker ants of Camponotus socius employ multicomponent signals during group recruitment to food sources and nest emigrations. The chemical signals consist of trail orientation pheromones that originate from the hindgut. Two components that elicit tra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b58474bf19b55a1031bc9df6a816ee8e
https://doi.org/10.1007/pl00001834
https://doi.org/10.1007/pl00001834