“…Camphor can easily be converted into many mono‐ and dibromo‐substituted derivatives, which are useful intermediates in ligand synthesis 14. Especially attractive for the synthesis of functionalized diphosphanes are 9,10‐ and 8,10‐dibromocamphors 6a and 6b , available from camphor by stereospecific bromination/rearrangement reaction sequences 15. Thus, the bromomethyl groups in 6a and 6b can be advantageously used for nucleophilic substitution with phosphorus nucleophiles to obtain 7a and 7b , whereas the carbonyl group can be further converted into, for example, the hydroxy group by reduction, giving rise to hydroxy derivative of the diphosphanes 8a and 8b , or transformed into an acetal group ( 9a , 9b ) 16…”