71720-83-7Relevant articles and documents
Facile and efficient syntheses of (11Z,13Z)-hexadecadienal and its derivatives: Key sex pheromone and attractant components of notodontidae
Liu, Fu,Kong, Xiangbo,Zhang, Sufang,Zhang, Zhen
, (2019/05/24)
Syntheses of (11Z,13Z)-hexadecadienal (1), (11Z,13Z)-hexadecadienol (2), (11Z,13Z)-hexadecadien-1-yl acetate (3), and (Z)-13-hexadecen-11-ynal (4) from commercially available starting material 10-bromo-1-decanol are reported. These (Z,Z)-dienes and conjugated en-yne moieties are common in sex pheromone and attractant components for many Notodontide insect pests. The synthetic scheme, using the C10 + C3 + C3 strategy, was mainly based on three key steps: Alkylation of lithium alkyne under a low temperature, cis-Wittig olefination of the aldehyde with propylidentriphenylphosphorane, and hydroboration-protonolysis of alkyne. This synthetic route provided (11Z,13Z)-hexadecadienal (1) in a 23.0% total yield via an eight-step sequence, alcohol (2) in a 21.9% total yield, acetate (3) in a 21.4% total yield, and (Z)-13-hexadecen-11-ynal (4) in a 34.7% total yield. This simple strategy provides a new way to achieve syntheses of the key sex pheromones of Notodontide insect pests.
ALKENYL COPPER REAGENTS-26 CARBOCUPRATION OF ALKYNES BY ORGANOCOPPER REAGENTS BEARING A PROTECTED HYDROXY OR THIOL FUNCTION
Gardette, M.,Alexakis, A.,Normant, J. F.
, p. 5887 - 5900 (2007/10/02)
Halohydrins, protected as ethers, acetals or chloro-magnesium alcoholates are sequentially transformed into the Li or Mg reagents and then into copper or cuprate derivatives.Addition to acetylene or propyne is discussed according to various parameters.The alkenyl copper or cuprate species, thus obtained, may react further with various electrophiles, leading to difunctionalized alkenes.
Highly Stereoselective Synthesis of Acetates of Mono and Diunsaturated Alcohols and Analogous Aldehydes, Components of Lepidopteran Sex Pheromones, using Tetrakis-palladium
Michelot, Didier
, p. 130 - 134 (2007/10/02)
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