Activation of Di‐tert‐butyldiphosphatetrahedrane: Access to (tBuCP)n (n = 2, 4) Ligand Frameworks by P‒C Bond Cleavage
2021
The first mixed phosphatetrahedranes were reported only recently and their reactivity is virtually unexplored. Herein, we present a reactivity study on di-tert-butyldiphosphatetrahedrane (1), which is the dimer of tert-butylphosphaalkyne. The (tBuCP)2 tetrahedron is activated selectively by N-heterocyclic carbene (NHC) nickel(I) and nickel(0) complexes, resulting in novel complexes featuring diverse (tBuCP)n -frameworks (n=2, 4). Release of the (tBuCP)4 framework from one of the complexes was achieved by addition of CO gas. Furthermore, 1 can be used as a source for P2 units by elimination of di-tert-butylacetylene in the coordination sphere of nickel.
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