Synthesis, reactivity and catalytic activity of Au-PAd3 complexes†
Vladislav A.
Voloshkin, 
a
Kristof
Van Hecke,
a
Sii Hong
Lau,
b
Bradley P.
Carrow
b
and
Steven P.
Nolan
*a
a
Kristof
Van Hecke,
a
Sii Hong
Lau,
b
Bradley P.
Carrow
b
and
Steven P.
Nolan
*a
Abstract
Tri(1-adamantyl)phosphine (PAd3) possesses unique steric and electronic properties positioning it at the border between tertiary phosphines and N-heterocyclic carbenes (NHC). Novel Au-PAd3 complexes were synthesized from the known [Au(PAd3)Cl]. We have optimised reaction conditions for the synthesis of this useful synthon in order to circumvent the formation of the [Au(PAd3)2]Cl. [Au(PAd3)Cl] was used to access a number of derivatives and some were deployed as catalysts. The hydration of alkynes was targeted to gauge the reactivity of Au-PAd3 complexes and permit comparison with NHC and tertiary phosphine congeners.
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