Phosphorus substituted carbodiimides

The first phosphorus substituted carbodiimide was synthesized by Kohler and Kotte in... 

The reaction of bis(tiimethylsilyl)carbodiimide with the P=N derivative 26 gives the [2+2] cycloadduct 27, which on long standing rearranges to the phosphorus substituted carbodi-imide 28P... 

Also, metal substituted nitrile imines undergo a light induced rearrangement reaction to give silicon-boron, silicon-germanium, silicon-silicon, silicum-phosphorus, boron-boron, and germanium-germanium carbodiimides. An example is the formation of the Si, P... 

Silyl derivatives of open-chain compounds with >2 N or P centers. According to the literature search153 the molecules in Table 73 qualify for this subsection, i.e. silyl-substituted azo, carbodiimide, phosphorus imide, hydrazine, azide and tetrazene compounds. Most of them are of considerable size for example,... 

---