On Catalysis by Ionic Liquids
On Catalysis by Ionic Liquids
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DOI：
10.1021/ja900076a
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发表时间：
2009-05-27
影响因子：
15
通讯作者：
Roy, Sudipta Raha
中科院分区：
文献类型：
--
作者：
Chakraborti, Asit K.;Roy, Sudipta Raha
提出了离子液体（IL）催化的分子水平机理为通过“协同氢键和电荷-电荷相互作用的中继”的“亲电亲核双重活化”。光谱（H-1 NMR和IR）研究用于探测[bmim][OAc]的C2-氢和AcO-阴离子在催化O-t-Boc形成中的参与。通过MALDI-TOF-TOF MS和MS-MS的离子钓鱼建立了氢键簇合物
A molecular level mechanism of catalysis by an ionic liquid (IL) is proposed as an "electrophile nucleophile dual activation" through a "relay of cooperative hydrogen bonds and charge-charge interactions". Spectroscopic (H-1 NMR and IR) studies were used to probe the involvement of the C-2 hydrogen and the AcO- anion of [bmim][OAc] in the catalysis for O-t-Boc formation. Ion fishing by MALDI-TOF-TOF MS and MS-MS established the hydrogen bonded clusters