21135-20-6Relevant academic research and scientific papers
Preparation and Ligand-exchange Reactions of Phosphinegold Ethynyl Complexes
Cross, Ronald J.,Davidson, Michael F.
, p. 411 - 414 (2007/10/02)
Phosphinegold chlorides, , react readily with terminal alkynes RC*CH in ethanolic sodium ethoxide to produce high yields of ethynyl complexes .When R = H a second reaction leads to formation of .In a similar manner, the cyclopentadienyl complex can conveniently be made from , Na(OEt), and C5H6.The phosphine of rapidly exchanges in solutions with free phosphines.The compounds and > readily equilibrate with and >, a reaction which could also involve exchange of phosphines, but the exchange of Cl for C*CPh is another possible pathway.Phenylethynyl groups from exchange with both chlorides of HgCl2, cis-, and cis-.With the latter complex the exchange is non-stereospecific, unlike related reactions with organomercurials.
ETHYNYLGOLD(I) COMPLEXES
Cross, Ronald J.,Davidson, Michael F.,McLennan, Alistair J.
, p. C37 - C39 (2007/10/02)
Reactions between R3PAuCl, NaOEt, and HCCR' under mild conditions produce R3PAuCCR' in excellent yield.When R' = H, a second step leading to the formation of R3PAuCCAuPR3 can take place.Exchange reactions of ethynyl for chloride between the ethynylgold complexes and HgCl2, cis-, cis-, and R 3PAuCl have been monitored, revealing R3PAuCCR' to be useful alkynylating agents.In the reaction with cis-, the first substitution step is non-specific.
