IBX as a catalyst for dehydration of hydroperoxides: green entry to α,β-unsaturated ketones <i>via</i> oxygenative allylic transposition
作者:Tetsuya Kuga、Yusuke Sasano、Yoshiharu Iwabuchi
DOI:10.1039/c7cc08957k
日期:——
A catalytic transformation of allylic hydroperoxides into α,β-unsaturated carbonyl compounds using IBX as a dehydration catalyst is described. The combination of a singlet oxygen ene reaction and the IBX-catalyzed dehydration provides α,β-unsaturated carbonyl compounds from alkenes via oxygenativeallylictransposition with H2O as the only byproduct.
renewable olefin β‐pinene with molecular oxygen was experimentally and computationally investigated. Peroxyl radicals abstract weakly bonded allylic hydrogen atoms from the substrate, yielding allylic hydroperoxides (i.e., myrtenyl and pinocarvyl hydroperoxide). In addition, peroxyl radicals add to the CC bond of the substrate to form an epoxide. It was found that a relatively high peroxyl radical concentration