Single versus Double Cu(I) Catalyzed [3 + 2] Azide/Platinum Diacetylide Cycloaddition Reactions
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https://figshare.com/articles/dataset/Single_versus_Double_Cu_I_Catalyzed_3_2_Azide_Platinum_Diacetylide_Cycloaddition_Reactions/4766800
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资源简介：
This report focuses
on Cu(I) catalyzed cycloaddition reactions
between organic azides and the platinum diacetylide complexes trans-(PR3)2Pt(CCR′)2 (where PR3 = P(OEt)3, PEt3, PnBu3, PPhMe2, PPh3, and PBn3; and R′ = H, Ph, and p-PhNO2). Pt(II)-Diacetylides supported by P(OEt)3, PEt3, PnBu3, and PPhMe2 react with benzyl azide to provide syn/anti isomers of double cycloaddition
products. In contrast, Pt(II)-diacetylide complexes supported by PPh3 and PBn3 afford single cycloaddition products,
exclusively. Steric congestion enforced by the larger phosphines PPh3 and PBn3 prevent the second cycloaddition. Ground
state DFT computations provide some insight into the divergent reactivity
and indicate that the π-acidity of the phosphine ligands is
a variable in the single vs double cycloaddition outcome.
创建时间：
2017-03-20
