Electric Literature of 213697-53-1. Let’s face it, organic chemistry can seem difficult to learn. Especially from a beginner’s point of view. Like 213697-53-1, Name is 2′-(Dicyclohexylphosphino)-N,N-dimethyl-[1,1′-biphenyl]-2-amine. In a document type is Patent, introducing its new discovery.
The present invention relates to a process for preparing cyclic carbonates of formula Ia or Ib or mixtures thereof (Ia) (Ib) comprising the process step: a) reacting a propargylic alcohol of formula II (II) with carbon dioxide in the presence of at least one transition metal catalyst TMC1, which comprises a transition metal selected from metals of groups 10, 11 and 12 of the periodic table of the elements according to IUPAC and at least one bulky ligand.
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Reference：
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate