Mapping the active site in a chemzyme: diversity in the N-substituent in the catalytic asymmetric aziridination of imines.
Mapping the active site in a chemzyme: diversity in the N-substituent in the catalytic asymmetric aziridination of imines.
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DOI:
10.1021/ol802431v
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发表时间:
2008-12-04
期刊:
影响因子:
5.2
通讯作者:
Wulff WD
中科院分区:
文献类型:
--
作者:
Zhang Y;Lu Z;Desai A;Wulff WD
The active site of the aziridination catalyst derived from either the VANOL or VAPOL ligand is larger than expected and can accommodate not only significant substitution on the diarylmethyl unit of the imine but also that alkyl (but not perfluorylalkyl) substituents on the aryl groups lead to enhanced rates and enantioselection. The screen of diarylmethyl N-substituents on the imine revealed that the 3,5-di-t-Butyldianisylmethyl group (BUDAM) gave exceptionally high asymmetric inductions for imines of aryl aldehydes.
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