Synthesis of magnetically recoverable imidazolium hydrogen carbonate and its application as an N-heterocyclic carbene catalyst to cyanosilylation of aldehydes and ketones

被引：13

作者：

Fujii, Akira ^{[1
]}

Choi, Jun-Chul ^{[1
]}

Fujita, Ken-ichi ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Tsukuba Cent 5,1-1-1 Higashi, Tsukuba, Ibaraki 3058565, Japan

来源：

TETRAHEDRON LETTERS | 2017年 / 58卷 / 15期

关键词：

Magnetite; Catalysis; Imidazollum hydrogen carbonate; Cyanosilylation; RETRIEVABLE CATALYSTS; OSMIUM CATALYSTS; ORGANOCATALYSTS; DIHYDROXYLATION; CARBOXYLATES; HYDROLYSIS; SUPPORTS; OLEFINS; NHCS; CO;

D O I：

10.1016/j.tetlet.2017.03.006

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

We prepared a magnetically recoverable imidazolium hydrogen carbonate by immobilizing an imidazolium hydrogen carbonate on magnetite and applied it as an N-heterocyclic carbene catalyst to the cyanosilylation of aldehydes and ketones. By employing the magnetite-supported imidazolium hydrogen carbonate as a catalyst, the cyanosilylation proceeded at 60 degrees C to provide the corresponding trimethylsilylated cyanohydrin in a fair chemical yield. Moreover, after the reaction, the magnetic catalyst was readily recovered by use of an external magnet and could be reused up to five times. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：1515 / 1518

页数：4

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