This type of reactivity has quickly become one of the cornerstones of modern catalysis .In a patent, Safety of 1,5-Diphenylpenta-1,4-dien-3-one, name is 1,5-Diphenylpenta-1,4-dien-3-one, belongs to chiral-oxygen-ligands compound, introducing its new discovery. Safety of 1,5-Diphenylpenta-1,4-dien-3-one
A chemodivergent synthesis of two series of spirochromans depending on the catalytic system was developed. Starting from diarylideneacetones and organoboronic acids, asymmetric rhodium catalysis led to the enantioselective synthesis of 4,4?-disubstituted 2,2?-spirobichromans, while acid catalysis led to the formation of 4-substituted spirochroman-2,2?-chromenes. A plausible mechanism of the chemodivergent synthesis was proposed.
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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