Heterogeneous catalytic sulfimidation using immobilized Cu(acac)2

被引:20
作者
Kantam, ML [1 ]
Kavita, B
Neeraja, V
Haritha, Y
Chaudhuri, MK
Dehury, SK
机构
[1] Indian Inst Chem Technol, Hyderabad 500007, Andhra Pradesh, India
[2] Indian Inst Technol Guwahati, Gauhati 781039, India
关键词
asymmetric sulfimidation; bis(oxazoline); copper acetylacetonate; ionic liquids; microencapsulation; N-(p-tolylsulfonyl)imino]phenyliodinane;
D O I
10.1002/adsc.200404291
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
The heterogeneous sulfimidation of various sulfides by microencapsulated copper(II) acetylacetonate, [MC-Cu(acac)(2)], and Cu(acac)(2) immobilized in ionic liquids using [N-(p-tolylsulfonyl)imino]phenyliodinane (PhI=NTs) as nitrene donor has been developed to afford the corresponding sulfimides in good to excellent yields. In the presence of a chiral bis(oxazoline) as ligand, asymmetric induction occurs to afford the chiral sulfimides (up to 50% ee). The ionic liquid containing the immobilized bis(oxazoline)-copper catalyst can be reused for several cycles with consistent activity and enantioselectivity.
引用
收藏
页码:641 / 645
页数:5
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