Diastereoselective synthesis of 3,3-disubstituted oxindoles from atropisomeric N-aryl oxindole derivatives
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Acknowledgments
Financial support for this research from the Uehara Memorial Foundation and the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT, No. 21790026 and 23780115) is gratefully acknowledged. We thank Dr. Kenji Yoza (Bruker AXS) for the X-ray crystallographic analysis.
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