ON THE REACTION OF<i>N</i>-VINYLIMINOPHOSPHORANES. SYNTHESIS AND REACTION OF 1,2-λ<sup>5</sup>-AZAPHOSPHORINE RING SYSTEM
作者:Tomoshige Kobayashi、Makoto Nitta
DOI:10.1246/cl.1985.1459
日期:1985.10.5
The reaction of N-vinyliminotrimethoxyphosphorane reacts with electron deficient acetylenes results in the formation of formal [4+2] cycloadducts, 1,2-λ5-azaphosphorines 4a-c. However, N-vinyliminotriphenylphosphorane reacts with dimethyl acetylenedicarboxylate (DMAD) in a formal [2+2] manner. The product 4a or 4b also reacts with DMAD to give λ5-phosphorine derivatives.
N-vinyliminotrimethoxyphosphorane 与电子缺乏的乙炔反应会形成正式的 [4+2] 环加载产物,即 1,2-λ5-氮磷 4a-c。然而,N-乙烯亚氨基三苯基膦与乙酰二羧酸二甲酯(DMAD)以形式[2+2]方式发生反应。产物 4a 或 4b 也会与 DMAD 反应,生成 λ5- 磷衍生物。