The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.Formula: C17H14O, Name is 1,5-Diphenylpenta-1,4-dien-3-one, molecular formula is C17H14O, Formula: C17H14O. In a Article, authors is Fu, Zhenqian£¬once mentioned of Formula: C17H14O
Direct synthesis of highly substituted 2-cyclohexenones and sterically hindered benzophenones based on a [5C + 1C] annulation
(Chemical Equation Presented) The regiospecific [5C+1C] annulation of readily available R-alkenoyl ketene (S,S)-acetals 1 with aryl methyl ketones 2, the less active methylene compounds, has been developed. Upon treatment of 1 with 2 in the presence of t-BuOK inDMFat room temperature, highly substituted 2-cyclohexenones 3 were synthesized in high to excellent diastereoselectivities with high yields. On the basis of this strategy, sterically hindered benzophenones 4 were conveniently prepared via the iodonationaromatization of 2-cyclohexenones 3 with I2 in MeONa/MeOH basic medium. Furthermore, benzophenones 4 were also obtained directly from 1 and 2 following a sequential [5 + 1] annulation-iodonation-aromatization procedure in a one-pot operation.
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Reference£º
Synthesis and Crystal Structure of a Chiral?C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur¨Cnitrogen¨Coxygen ligand derived from aminothiourea and sodium?D-camphor-¦Â-sulfonate