Title of article
Asymmetric epoxidation catalyzed by novel azacrown ether-type chiral quaternary ammonium salts under phase-transfer catalytic conditions
Author/Authors
Hori، نويسنده , , Kazushige and Tamura، نويسنده , , Mina and Tani، نويسنده , , Keita and Nishiwaki، نويسنده , , Nagatoshi and Ariga، نويسنده , , Masahiro and Tohda، نويسنده , , Yasuo، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2006
Pages
4
From page
3115
To page
3118
Abstract
Asymmetric epoxidation of (E)-chalcone with alkaline hydrogen peroxide by novel chiral phase-transfer catalysts (chiral PTCs) with quaternary ammonium salts of azacrown ether proceeded in high yield and good enantioselectivity. Remarkably, this reaction depended on the length of the carbon chain on the nitrogen atom with the chiral PTCs and on the bulk of the base.
Keywords
Asymmetric epoxidation , Azacrown ether , Chiral phase-transfer catalyst
Journal title
Tetrahedron Letters
Serial Year
2006
Journal title
Tetrahedron Letters
Record number
1849872
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