So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Sun, Feilong; Yang, Chengxi; Ni, Jie; Cheng, Gui-Juan; Fang, Xianjie researched the compound: 1,2-Bis(diphenylphosphino)ethane( cas:1663-45-2 ).Application In Synthesis of 1,2-Bis(diphenylphosphino)ethane.They published the article 《Ligand-Controlled Regiodivergent Nickel-Catalyzed Hydrocyanation of Silyl-Substituted 1,3-Diynes》 about this compound( cas:1663-45-2 ) in Organic Letters. Keywords: nickel catalyzed hydrocyanation silyl substituted diyne; crystal structure cyano containing enyne; mol structure cyano containing enyne; cyano silyl containing enyne preparation crystal structure. We’ll tell you more about this compound (cas:1663-45-2).
A regiodivergent Ni-catalyzed hydrocyanation of 1-aryl-4-silyl-1,3-diynes is reported. When appropriate bisphosphine and phosphine-phosphite ligands are applied, the same starting materials can be converted into two different enynyl nitriles with good yields and high regioselectivities. The DFT calculations unveiled that the structural features of different ligands bring divergent alkyne insertion modes, which in turn lead to different regioselectivities. Also, the synthetic value of the cyano-containing 1,3-enynes was demonstrated with several downstream transformations.
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Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis