On- and Off-Cycle Catalyst Cooperativity in Anion-Binding Catalysis.
On- and Off-Cycle Catalyst Cooperativity in Anion-Binding Catalysis.
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在阴离子结合催化中的催化剂和周期催化剂的合作。
DOI:
10.1021/jacs.6b04686
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发表时间:
2016-06-29
影响因子:
15
通讯作者:
Jacobsen EN
中科院分区:
文献类型:
--
作者:
Ford DD;Lehnherr D;Kennedy CR;Jacobsen EN
Chiral, neutral H-bond donors have found widespread use as catalysts in enantioselective reactions involving ion-pair intermediates. Herein, a systematic mechanistic study of a prototypical anion-binding reaction, the thiourea-catalyzed enantioselective alkylation of α-chloroethers, is detailed. This study reveals that the catalyst resting state is an inactive dimeric aggregate that must dissociate and then reassemble to form a 2:1 catalyst–substrate complex in the rate-determining transition structure. Insight into this mode of catalyst cooperativity sheds light on the practical limitations that have plagued many of the H-bond donor-catalyzed reactions developed to date and suggests design strategies for new, highly efficient catalyst structures.
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影响因子:
16.6
作者:
Brak, Katrien;Jacobsen, Eric N.
通讯作者:
Jacobsen, Eric N.
影响因子:
15
作者:
Brown, Adam R.;Kuo, Wen-Hsin;Jacobsen, Eric N.
通讯作者:
Jacobsen, Eric N.
影响因子:
16.6
作者:
Jones, Christopher R.;Pantos, G. Dan;Smith, Martin D.
通讯作者:
Smith, Martin D.
影响因子:
15
作者:
GUILLANEUX, D;ZHAO, SH;KAGAN, HB
通讯作者:
KAGAN, HB
影响因子:
2.1
作者:
Kotke, M;Schreiner, PR
通讯作者:
Schreiner, PR