Catalytic Oxygenative Allylic Transposition of Alkenes into Enones with an Azaadamantane-Type Oxoammonium Salt Catalyst was written by Nagasawa, Shota;Sasano, Yusuke;Iwabuchi, Yoshiharu. And the article was included in Chemistry – A European Journal in 2017.Category: piperidines This article mentions the following:
The first catalytic oxygenative allylic transposition of unactivated alkenes, e.g., Me2C:CH2(CH2)3OCOPh, into enones, e.g., H2C:C(Me)CO(CH2)3OCOPh, has been developed using an oxoammonium salt, azaadamantane I, as the catalyst. This reaction converts various tri- and trans-disubstituted alkenes into their corresponding enones with transposition of their double bonds at ambient temperature in good yields. The use of a less-hindered azaadamantane-type oxoammonium salt as the catalyst and a combination of two distinct stoichiometric oxidants, namely, iodobenzene diacetate and magnesium monoperoxyphthalate hexahydrate (MMPP·6H2O) are essential to facilitate the enone formation efficiently. In the experiment, the researchers used many compounds, for example, 1-Tosylpiperidin-4-one (cas: 33439-27-9Category: piperidines).
1-Tosylpiperidin-4-one (cas: 33439-27-9) belongs to piperidine derivatives. The piperidine structural motif is present in numerous natural alkaloids. These include piperine, which gives black pepper its spicy taste. Piperidine derivatives bearing a masked aldehyde function in the ε-position are easily transformed into quinolizidine compounds through intramolecular reductive amination.Category: piperidines
Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem