thioxothiaphosphirane derivative 6. Thermolysis of the phosphaalkenes 4a–c gives an unexpected result: rearrangement of the ring skeleton with cleavage of the alkyl substituent at the P/C double bond to afford the isophospholine system 7 occurs. The constitution of compound 7 was deduced from its spectral data and confirmed by reactivity studies.
羰基叶立德的区域特异性1,3-偶极环加成2,从
环氧乙烷热产生1到phosphaalkynes 3配料多环phosphaalkenes 4。4a与
硫或灰色
硒的反应生成
噻吩或
硒代
膦酸酯衍
生物5。可以通过添加
化学计量的
硫来实现5a中
磷原子的氧化,从而得到
噻吨硫代膦烷衍
生物6。
磷烯烃4a – c的热解得到的结果出乎意料:通过在P / C双键处烷基取代基的裂解,发生环骨架的重排,从而得到异
磷酸系统7。由其光谱数据推导化合物7的组成,并通过反应性研究证实。