Determination of enantiomer composition of several bicyclic ketal insect pheromone components

1977 ◽  
Vol 3 (1) ◽  
pp. 27-43 ◽  
Author(s):  
T. E. Stewart ◽  
E. L. Plummer ◽  
L. L. McCandless ◽  
J. R. West ◽  
R. M. Silverstein
Keyword(s):  
Insect Pheromone ◽  
Pheromone Components ◽  
Enantiomer Composition

The determination of enantiomer composition of 1-((3-chlorophenyl)-(phenyl)methyl) amine and 1-((3-chlorophenyl)(phenyl)-methyl) urea (Galodif) by NMR spectroscopy, chiral HPLC, and polarimetry

Chirality ◽  
2018 ◽  
Vol 30 (10) ◽  
pp. 1135-1143
Author(s):  
Vera Yu. Kuksenok ◽  
Victoria V. Shtrykova ◽  
Victor D. Filimonov ◽  
Alexandr G. Druganov ◽  
Alexandr A. Bondarev ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Chiral Hplc ◽  
Methyl Amine ◽  
Enantiomer Composition

NMR determination of the enantiomer composition of penicillamine using an optically active europium shift reagent

1974 ◽  
Vol 6 (12) ◽  
pp. 669-670 ◽  
Author(s):  
Anthony F. Cockerill ◽  
Geoffrey L. O. Davies ◽  
Roger G. Harrison ◽  
David M. Rackham
Keyword(s):  
Shift Reagent ◽  
Optically Active ◽  
Enantiomer Composition

Effect of release rate and enantiomeric composition on response to pheromones of Megaplatypus mutatus (Chapuis) in poplar plantations of Argentina and Italy

2013 ◽  
Vol 103 (5) ◽  
pp. 564-569 ◽  
Author(s):  
Hernán Funes ◽  
Eduardo Zerba ◽  
Paola Gonzalez-Audino
Keyword(s):  
Release Rate ◽  
Low Cost ◽  
Field Trials ◽  
Severe Damage ◽  
Baited Traps ◽  
Pheromone Components ◽  
Important Pest ◽  
Poplar Plantations ◽  
Enantiomer Composition ◽  
Megaplatypus Mutatus

AbstractMegaplatypus mutatus (=Platypus sulcatus Chapuis) is an Ambrosia beetle native to South America, which was recently introduced in Italy and its presence there is causing severe damage to the local poplar plantations. The male M. mutatus pheromone is composed of (S)-(+)-6-methyl-5-hepten-2-ol [(+)-sulcatol], 6-methyl-5-hepten-2-one (sulcatone) and 3-pentanol. A series of field trials testing dose, blend and enantiomer composition performed in Argentina and Italy evaluated attraction and found that the optimal release rate of pheromone components as baits in cross vane baited traps (CIPEIN-CV) was 6, 6 and 30 mg day−1 of sulcatone, (+)-sulcatol and 3-pentanol, respectively. It was also determined that racemic sulcatol is as effective as the pure (+)-isomer for the purpose of beetle catch, due to the inert nature of the (−)-isomer allowing the usage of low cost racemic sulcatol instead of highly expensive (+)-sulcatol. The results of our work contribute to the development of pheromone-based local technologies with low environmental impact and low cost for control or monitoring of an important pest.

Insect pheromone components

Tetrahedron ◽  
1982 ◽  
Vol 38 (5) ◽  
pp. 639-644 ◽  
Author(s):  
Renzo Rossi ◽  
Adriano Carpita ◽  
Maria G. Quirici ◽  
Carlo Alberto Veracini
Keyword(s):  
Insect Pheromone ◽  
Pheromone Components

Determination of the enantiomeric composition of several insect pheromone alcohols

1976 ◽  
Vol 2 (3) ◽  
pp. 307-331 ◽  
Author(s):  
E. L. Plummer ◽  
T. E. Stewart ◽  
K. Byrne ◽  
G. T. Pearce ◽  
R. M. Silverstein
Keyword(s):  
Insect Pheromone ◽  
Enantiomeric Composition

Pheromones, 88 [1]. Sex Pheromone Components of Female Euzophera punicaella M. (Lepidoptera, Pyralidae)

1993 ◽  
Vol 48 (1-2) ◽  
pp. 110-112 ◽  
Author(s):  
H. J. Bestmann ◽  
F. Kern ◽  
G. G. Melikyan ◽  
D. Schäfer ◽  
O. Vostrowsky ◽  
...  
Keyword(s):  
Sex Pheromone ◽  
Male Moth ◽  
Sex Pheromone Components ◽  
Pheromone Components ◽  
Synthetic Test ◽  
Lepidoptera Pyralidae ◽  
Pyralid Moth ◽  
Best Responses

By means of GC, GC-MS and GC-combined EAG recordings (9Z,12E)-9,12-tetradecadien-1-ol (1) and (9Z,12E)-9,12-tetradecadienyl acetate (2) in a ratio of 4:1 were identified as the pheromone components of the female pyralid moth Euzophera punicaella M. originating from Armenia. Determination of EAG activity with male moth antennae and synthetic test chemicals revealed best responses with a mixture of both compounds.

Enantiomer Resolution and Assay of Propionic Acid-Derived Herbicides in Formulations by Using Chiral Liquid Chromatography and Achiral Gas Chromatography

1988 ◽  
Vol 71 (3) ◽  
pp. 614-617
Author(s):  
Markus D MÜller ◽  
Hans-Paul Bosshardt
Keyword(s):  
Gas Chromatography ◽  
Liquid Chromatography ◽  
Propionic Acid ◽  
Methyl Esters ◽  
Chiral Column ◽  
Enantiomer Resolution ◽  
High Resolution Gas Chromatography ◽  
Enantiomer Composition ◽  
Good Agreement

Abstract Enantiomers of 6 propionic acid-derived herbicides in the form of their esters were resolved using liquid chromatography with a chiral column. Free acids are converted to methyl esters by means of a BF3- catalyzed reaction. Chromatographic resolutions for 6 of 8 herbicides investigated were in the range of 2 to 4. The method was applied for the simultaneous determination of mecoprop and 2,4-D content and individual mecoprop enantiomers in 2 formulations containing racemic and R-mecoprop in mixture with 2,4-D. Precision and accuracy of content determination was comparable to standard methods, and enantiomer contents were in good agreement with declared values. The enantiomers of dichlorprop and mecoprop were also resolved as diastereomeric menthyl esters by achiral high resolution gas chromatography (HRGC). HRGC data on enantiomer composition were in good agreement with those from the LC method and other data

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