Gold acetylides synthesis

Packheiser, R., Jakob, A., Ecorchard, P, Walfort, B., and Lang, H. 2008. Diphenylphosphinoferrocene gold(l) acetylides Synthesis of heterotri- and heterote-Iramelallic transition metal complexes. Organometallics 27, 1214—1226. 

Low solubility of products is a major difficulty associated with the synthesis of conjugated transition metal acetylide polymers. Puddephatt and cowoikers found that the solubility of gold acetylide polymers could be controlled by altering the phosphine ligands on Au. " Scheme 12 shows the synthesis of low-solubility polymers (48) that had molecular weights estimated to range from 13,700 to 27,000. ... 

Luminescent gold(l) acetylide complexes. Photophysical and photoredox properties and crystal structure of [ Au(C = CPh) 2 (p-Ph2PCH2CH2PPh2)]. Journal of the Chemical Society, Dalton Transactions, 2929-2932 (d) Che, C.-M., Wong, W.-T., Lai, T.-F. and Kwong, H.-L. (1989) Novel luminescent binuclear gold(I) isocyanide complexes. Synthesis, spectroscopy, and X-ray crystal structure of Au2(dmh)(CN)2 (dmb = 1,8-di-isocyano-p-menfhane). Journal of the Chemical Society, Chemical Communications, 243-244. 

Other nucleophiles that have been used in this context are acetylides (alkynes). The addition of those to iminium cations generated in situ from aldehydes and secondary amines accomplishes a gold(III)-catalyzed three-component coupling for the synthesis of propargylamines, as can be observed in equation (124). The reactions are performed in water or in tetrahydrofuran (THF) when supported catalysts are employed.Chiral prolinol derivatives as... 

SCHEME 1. Synthesis of (isocyano)gold(I) acetylide polymers... 

Synthesis and design of novel tetranuclear and dinuclear gold(I) phosphine acetylide complexes. First X-ray crystal structures of a tetranuclear ([Au4(tppb)(C Ph)4]) and a related dinuclear ([AUjfdppb) (C=CPh)2] complex, V. W. W. Yam, S. W. K. Choi, K. K. Cheung, Organometallics 1996,15,1734. 

Linear ditopic acetylide gold or mercury complexes synthesis and photophysic studies X-ray crystal structure of PPh4[Au(C=CCjH4N)2], M. Ferrer, L. Rodriguez, O. RosseU, F. Pina, C. Lima, M. F. Bardia, X. Solans, J. Organomet. Chem. 2003, 678, 82. 

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