52475-86-2Relevant academic research and scientific papers
The search for new odorants: Synthesis of animalic fragrant and musky/ambery compounds
Plessis, Caroline
, p. 1517 - 1539 (2015/03/03)
An overview of the recent research which allowed us to discover novel animalic odorants is presented. The new derivatives were prepared from readily available starting materials via easy reaction steps in good yields. They possess very different structures, such as bicyclic pentanols, glycolates, or tricyclic ketones, and all show interesting notes in the animalic fragrant family: from costus, leathery to ambery and musky scents, making them all attractive for different purposes.
Unsaturated aldehydes as alkene equivalents in the Diels-Alder reaction
Taarning, Esben,Madsen, Robert
supporting information; experimental part, p. 5638 - 5644 (2009/05/30)
A one-pot procedure is described for using α,β-unsaturated aldehydes as olefin equivalents in the Diels-Alder reaction. The method combines the normal electron demand cycloaddition with aldehyde dienophiles and the rhodium-catalyzed decarbonylation of aldehydes to afford cyclohexenes with no electron-with-drawing substituents. In this way, the aldehyde group serves as a traceless control element to direct the cycloaddition reaction. The Diels-Alder reactions are performed in a diglyme solution in the presence of a catalytic amount of boron trifluoride etherate. Subsequent quenching of the Lewis acid, addition of 0.3% of [Rh(dppp)2Cl] and heating to reflux achieves the ensuing decarbonylation to afford the product cyclohexenes. Under these conditions, acrolein, crotonaldehyde and cinnamaldehyde have been reacted with a variety of 1,3-dienes to afford cyclohexenes in overall yields between 53 and 88%. In these transformations, the three aldehydes serve as equivalents of ethylene, propylene and styrene, respectively.
Cycloaddition Of Carbonyl Compounds To Olefins At Aluminosilicate Catalysts
Volcho, K. P.,Tatarova, L. E.,Korchagina, D. V.,Salakhutdinov, N. F.,Aul'chenko, I. S.,et al.
, p. 683 - 694 (2007/10/02)
The use of zeolite catalysts in the reactions of allocimene and myrcene with α,β-unsaturated carbonyl compounds makes the reaction conditions milder and increases both the regio- and the stereoselectivity of the diene synthesis processes.In the reaction of certain polyenes with aldehydes at ascanite-bentonite clay a new reaction, leading to bicyclic ethers, was discovered.
