A HIGHLY EFFECTIVE QUENCHING METHOD OF 1,3-DIPOLAR CYCLOADDITIONS OF NITRILE OXIDES OR NITRILE OXIDE-LEWIS-ACID COMPLEXES BY USE OF 2-PROPENYLOXYMAGNESIUM BROMIDE

被引:15
|
作者
KANEMASA, S [1 ]
NISHIUCHI, M [1 ]
机构
[1] KYUSHU UNIV,INTERDISCIPLINARY GRAD SCH ENGN SCI,DEPT MOLEC SCI & TECHNOL,KASUGA 816,JAPAN
关键词
NITRILE OXIDE; DIPOLAR CYCLOADDITION; LEWIS ACID COMPLEX; TERMINATION; QUENCHER; ALLYL ALCOHOL; MAGNESIUM ALKOXIDE;
D O I
10.1016/S0040-4039(00)60603-2
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
2-Propenyloxymagnesium bromide, readily prepared by treating 2-propen-1-ol with EtMgBr, is a highly effective quencher of nitrile oxide cycloadditions since this alkoxide is much more reactive to nitrile oxides than any other ever known dipolarophiles of the electron-deficient, electron-rich, and strained types, including 3-buten-2-one, ethyl vinyl ether, and norbornene, respectively. This quencher is also effectively utilized to terminate the dipolar cycloadditions of nitrile oxide/Lewis acid complexes.
引用
收藏
页码:4011 / 4014
页数:4
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