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Italian women : You italian men are such morti di figa. I'm done with you!. Zhongshan Road, Shanghai, , P. This article is part of the Thematic Series "Organocatalysis". Swaffelen We reported the first example of organocatalytic Michael addition of unprotected 3-prochiral oxindoles 1 to 1,4-naphthoquinone. This method could be used for the synthesis of enantioenriched 3,3-diaryloxindoles, and the catalytic synthesis of which was unprecedented. The catalytic asymmetric synthesis of 3,3-disubstituted oxindoles has recently received great attention because of the wide occurrence of this structural motif in natural products and pharmaceutically active compounds []. In addition, structure—activity relationship studies have revealed that the absolute configuration and the substituent of the C3 position of oxindole greatly influenced the biological activities [4]. Accordingly, the development of efficient synthetic methods to enable the synthesis of 3,3-disubstituted oxindoles in great structural diversity is of current interest, and much progress had been made in the catalytic enantioselective synthesis of 3-hydroxyoxindoles [] , 3-aminooxindoles [] and 3-quaternary oxindoles []. Despite achievements, the catalytic asymmetric synthesis of 3,3-diaryloxindoles has not been reported.


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Using first principles calculations, we studied a new class of graphdiyne nanoribbons GDYNR with open hexagonal rings on the edges. To avoid the effects from dangling bond, hydrogen or oxygen atoms were absorbed on the edges.

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