Enantioselective Preparation of cis-β-Azidocyclopropane Esters by Cyclopropanation of Azido Alkenes Using a Chiral Dirhodium Catalyst
收藏Figshare2016-02-21 更新2026-04-29 收录
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https://figshare.com/articles/dataset/Enantioselective_Preparation_of_i_cis_i_Azidocyclopropane_Esters_by_Cyclopropanation_of_Azido_Alkenes_Using_a_Chiral_Dirhodium_Catalyst/2525431
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A diastereo- and enantiocontrolled preparation of the conformationally restricted cis-β-azidocyclopropane esters have been developed. The Rh2(S-DOSP)4 was found to be an efficient catalyst in hexane for the cyclopropanation of azido alkenes with diazo esters, and 19 cis-β-azidocyclopropane esters were prepared in excellent yields. The value of the diastereomer ratio was up to 99:1, and the enantiomeric excess was up to 95%. Furthermore, the relative and absolute configuration was confirmed by X-ray analysis.
创建时间：
2016-02-21
