Abstract
This review article focuses on 1λ
3
-phosphaalkene compounds derived from phosphines containing at least one silicon-phosphorous bond. 1λ
3
-Phosphaalkene compounds are of high value as they are used to form several phosphorous compounds containing a transition metal and main group elements. In addition to the fact that different kinds of 1λ
3
-phosphaalkynes are prepared from 1λ
3
-phosphaalkenes. Both families of phosphorous compounds; 1λ
3
-phosphaalkenes and 1λ
3
-phosphaalkynes have become important to chemists, as they are used in preparing several phosphorous compounds to be used as homogeneous catalysts in chemical reactions.