Abstract The reactions of 2-tert-butoxy-3-phenyl-1, 3, 2-oxazaphospholane and di-tert-butyl diethylphosphoramidite with carbon tetrachloride and chloroform were studied. These reactions proceed via formation of an intermediate quasiphosphonium compound. In the process, carbon tetrachloride acts as a source of positively charged halogen, and chloroform, as a CH acid.
![2-chloro-3-phenyl-[1,3,2]oxazaphospholidine 2-oxide Structure](https://image.chemsrc.com/caspic/005/38463-52-4.png)