Catalytic Asymmetric Cycloadditions between Aldehydes and Enolizable Anhydrides: cis-Selective Dihydroisocoumarin Formation
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https://figshare.com/articles/dataset/Catalytic_Asymmetric_Cycloadditions_between_Aldehydes_and_Enolizable_Anhydrides_i_cis_i_-Selective_Dihydroisocoumarin_Formation/7436411
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In the presence of a trityl-substituted cinchona alkaloid-based catalyst, homophthalic, aryl succinic, and glutaconic anhydride derivatives reacted with aromatic and aliphatic aldehydes to produce cis-lactones in up to 90:10 dr and 99% ee. A DFT study has shown how the catalyst is uniquely able to bring about the opposite sense of diastereocontrol to that usually observed.
创建时间：
2018-12-07
