New research progress on 538-58-9 in 2021. The appropriate choice of redox mediator can avoid electrode passivation and overpotential, which strongly inhibit the efficient activation of substrates in electrolysis. Formula: C17H14O, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 538-58-9
Phase-transfer catalysed condensation between 4-tert-butylcyclohexanone and bis(benzal)acetone yielded two 4-tert-butyl-7,11-bisarylspiro<5.5>undecane-1,9-dione diastereomers.The stereochemical assignment of these molecules was carried out using two-dimensional (2D) NMR spectroscopy.Combined use of COSY and NOESY spectra of these diastereomers helped in unambiguous and complete proton spin system assignment.In addition, from the application of 2D J-resolved spectra together with the Karplus equation, the exact conformation of the molecules could be established.KEY WORDS Diastereomeric differentiation Spiro annulation PTC double Michael condensation 2D NMR (COSY, NOESY and 2D J-resolved)
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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