Electric Literature of 538-58-9, Chemistry is a science major with cience and engineering. The main research directions are chemical synthesis, new energy materials, nano-ceramics, nano-hybrid composite materials, preparation and modification of special coatings. 538-58-9, Name is 1,5-Diphenylpenta-1,4-dien-3-one,introducing its new discovery.
Chemoselective double Michael addition: Synthesis of 2, 6-diarylspiro[cyclohexane-1,3′-indoline]-2′,4-diones via addition of indolin-2- one to divinyl ketones
Seventeen examples of 2,6-diarylspiro[cyclohexane-1,3′-indoline]-2′,4-diones were efficiently prepared by the Cs2CO3-catalysed chemoselective double Michael additions of indolin-2-one to divinyl ketones. This method has the advantage of high chemoselectivity, mild reaction conditions, high yield and atom- and step-economy.
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Reference：
Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate