Evidence for equilibrium between N-substituted 3-phosphorylidenepyrrolidine-2,5-diones and N-substituted maleimides and phosphines:: Thermal instability of the N-substituted phosphoranes

被引:3
|
作者
Koszytkowska-Stawinska, M [1 ]
Sas, W [1 ]
机构
[1] Warsaw Univ Technol, Fac Chem, PL-00664 Warsaw, Poland
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D O I
10.1039/a904433g
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The formation of N-substituted 3-phosphorylidenepyrrolidine-2,5-diones from N-substituted maleimides and phosphines is reversible and at elevated temperature the phosphoranes behave as a source of maleimide derivatives which give the corresponding cycloadducts with nitrones and 1,3-dienes; a consequence of this equilibrium is the thermal instability of the ylides.
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页码:694 / 695A
页数:5
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