Pheromone, 1. Mitt.: (+)-cis-Disparlure: Synthese und Feldtests
摘要:
A synthesis of (+)-cis-disparlure is described starting from racemic 2-hydroxy-dodecan-nitrile (2), which is transformed into the O-protected enantiomerically pure cyanohydrine 4. Grignard-reaction followed by reduction with BH3.(CH3)2S yields the corresponding threo-configurated secondary alcohol 10. After tosylation and cleavage of the MBE-protective-group (+)-cis-disparlure (14) is obtained by treatment with KOH. Mating disruption field tests exhibited a significantly increased effectiveness of (+)-cis-disparlure as compared to the racemic product.
Pheromone, 3.Mitt.: Eine einfache Methode zur Steuerung der Reduktion von ?-Alkoxy-carbonylverbindungen
作者:Christian R. Noe、M. Knollm�ller、G. Steinbauer、E. Wagner、H. K�rner、P. Ettmayer、H. V�llenkle
DOI:10.1007/bf00810831
日期:1991.4
Enantiomerically pure 1,2-diols bearing optionally syn or anti configurated secondary hydroxylic groups are synthesized from acetal-protected cyanohydrins. After resolution of the diastereomers the cyanohydrins are converted into alpha-alkoxy-ketones by Grignard-reaction followed by reduction using common chelating or non-chelating agents. Among others syntheses of enantiomerically pure pheromones, endo-Brevicomin, exo-Brevicomin and Dispalure are given as examples.
Pheromone, 1. Mitt.: (+)-cis-Disparlure: Synthese und Feldtests
作者:Christian R. Noe、Max Knollm�ller、Helmut K�rner、Gerhard Steinbauer、Helmut Koberg、Peter G�rtner
DOI:10.1007/bf00815171
日期:——
A synthesis of (+)-cis-disparlure is described starting from racemic 2-hydroxy-dodecan-nitrile (2), which is transformed into the O-protected enantiomerically pure cyanohydrine 4. Grignard-reaction followed by reduction with BH3.(CH3)2S yields the corresponding threo-configurated secondary alcohol 10. After tosylation and cleavage of the MBE-protective-group (+)-cis-disparlure (14) is obtained by treatment with KOH. Mating disruption field tests exhibited a significantly increased effectiveness of (+)-cis-disparlure as compared to the racemic product.