The present disclosure provides pheromone compositions. In some aspects, the compositions taught herein comprise a pheromone chemically corresponding to the pheromone naturally produced by a given insect, along with at least one positional isomer of said pheromone. In various aspects, pheromone compositions of the present disclosure are able to modulate the response of the insect based on the ratio of natural pheromone to its positional isomer.
The present invention relates to the use of hexadeca-8,15-dienal or of a substance mixture which comprises this compound as aroma chemical, in particular as fragrance, or formulation auxiliary; and also to processes for its preparation, moreover aroma substance compositions and compositions comprising hexadeca-8,15-dienal.
[DE] VERWENDUNG VON HEXADECA-8,15-DIENAL ALS AROMACHEMIKALIE<br/>[EN] USE OF HEXADECA-8,15-DIENAL AS AROMA CHEMICAL<br/>[FR] UTILISATION D'HEXADÉCA-8,15-DIÉNAL EN TANT QUE PRODUIT CHIMIQUE AROMATIQUE
申请人:BASF SE
公开号:WO2016059042A1
公开(公告)日:2016-04-21
Die vorliegende Erfindung betrifft die Verwendung von Hexadeca-8,15-dienaloder eines Stoffgemisches, welches diese Verbindung enthält, als Aromachemikalie, insbesondere als Riechstoff, oder Formulierungshilfsmittel; sowie Verfahren zu dessen Herstellung, außerdem Aromastoffzusammensetzungen und Mittel, enthaltend Hexadeca-8,15-dienal.
Tishchenko reactions of aldehydes promoted by diisobutylaluminum hydride and its application to the macrocyclic lactone formation
Aliphatic aldehydes react with catalytic amount of Dibal-H in n-pentane to give the corresponding Tishchenko products in good to excellent yields. On contrary, α-silyloxy aldehydes give α-silyloxy ketones via Oppenauer oxidation under similar condition. Tishchenko reaction of ω-alkene aldehydes followed by RCM and hydrogenation affords a convenient method to prepare the 11–37 membered macrocyclic lactones
Gold(I)‐Catalyzed Ring‐Closing Alkyne‐Carbonyl Metathesis for the Synthesis of Butenolides
作者:Zhenjie Su、Pathan Mosim Amin、Shaozhong Wang
DOI:10.1002/chem.202302044
日期:2023.11.21
A gold(I)-catalyzed ring-closing alkyne-carbonyl metathesis has been developed to construct γ-butenolides and related naturally occurring compounds, featuring the concurrent formation of a carbon-carbon double bond and a ketone group in 100 % atom economy.