Synergistic Stereocontrol in the Enantioselective Ruthenium-Catalyzed Sulfoxidation of Spirodithiolane-Indolones.

Synergistic Stereocontrol in the Enantioselective Ruthenium-Catalyzed Sulfoxidation of Spirodithiolane-Indolones.
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螺二硫戊环-吲哚酮对映选择性钌催化磺化氧化中的协同立体调控

DOI:
10.1002/chem.201501780
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发表时间:
2015
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影响因子:
--
通讯作者:
T. Bach
T. Bach
中科院分区:
--
文献类型:
--
作者:
F. Zhong;A. Pöthig;T. Bach

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A chiral ruthenium catalyst was developed for the enantioselective sulfoxidation of the title compounds. The catalyst combines two elements of chirality, a chiral pybox ligand and a chiral bicylic lactam unit, to which the ligand is attached. The latter unit was shown to improve significantly the performance of the catalyst by exposing one of the two enantiotopic sulfur atoms to the active site via hydrogen‐bond mediated coordination. Ten differently substituted substrates were converted into the respective sulfoxides in yields of 52–71 % and with ≥90 %ee.
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