Use of the Composite Material RuO<sub>2</sub>/BaTi<sub>4</sub>O<sub>9</sub> as an Environmentally Benign Solid Catalyst for the Oxidative Cleavage of Olefins
Catalytic use of a composite material, RuO2/BaTi4O9, in combination with NaIO4 in EtOAc-H2O has been shown to efficiently cleave alkenes, affording ketones, aldehydes and/or carboxylic acids in high yields.
Stereo- and Regioselectivity in an Intramolecular Nitrone-Alkene Cycloaddition of Hept-6-enoses with a<i>trans</i>-Acetonide Blocking Group
作者:Tony K. M. Shing、Wai F. Wong、Taketo Ikeno、Tohru Yamada
DOI:10.1002/chem.200800867
日期:2009.3.2
From sugar to cycloadduct: The effect of the trans‐acetonide blockinggroup and the stereochemistry of the substituents on the regio‐ and stereoselectivity in the intramolecularnitrone–alkenecycloaddition (INAC) reaction of hept‐6‐enoses (see scheme) is reported and studied by using theoretical analysis.