Journal
ORGANIC LETTERS
Volume 23, Issue 2, Pages 442-448Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.0c03947
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Funding
- ICSN
- China Scholarship Council
- Paris-Saclay University
- CHARMMMAT LabEx
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A highly enantio- and regioselective (3 + 2) formal cycloaddition catalyzed by a BINOL- and SPINOL-derived phosphoric acid is reported, leading to the synthesis of a wide variety of 2,3-disubstituted 2-aminoindolines with generally high yields and excellent enantioselectivities. The reaction showed moderate to complete diastereoselectivities in most cases, producing products with up to 98% yield and up to 99% ee.
Highly enantio- and regioselective (3 + 2) formal cycloaddition of beta-substituted ene- and thioenecarbamates as well as cyclic enamides with quinone diimides catalyzed by a BINOL- and SPINOL-derived phosphoric acid is reported. A wide variety of 2,3-disubstituted 2-aminoindolines, including polycyclic ones, were prepared in generally high yields (up to 98%) with moderate to complete diastereoselectivities and in most cases excellent enantioselectivities (up to 99% ee).
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