Complex Mercury trifluoromethanesulfonate

In an atmosphere of argon, a solution of 13.5 g (88%, 94 mmol) of S.6b and 300 mg (11 mmol) of copper (I) trifluoromethanesulfonate benzene complex (CuOTf) in 120 mL of dry diethyl ether is irradiated in a Pyrex photoreactor with a water cooled quartz immersion well by a high-pressure mercury lamp (HPK 125 W, Fa. Philips). After the reaction is complete (monitored by GLC), the mixture is concentrated in vacuo and purified by column chromatography (cyclohexane/ethyl acetate 2 3) to give 10.5 g (64% from... 

Mercury (II) trifluoromethanesulfonate-amine complex has been used to convert a variety of farnesol derivatives to their cyclization products42 (equation 19). 

Preparation and recrystallization of the complex requires —20 hr. Pentaammine-(trifluoromethanesuIfonato-O)iridium(III) trifluoromethanesulfonate (O.SO g, 0.69 mmol) is dissolved in dry liquid anunonia (20 mL) contained in a SO-mL round-bottomed flask that can be fitted with a mercury bubbler. The flask is initially cooled in a Dry Ice/acetone bath to prevent excessive splashing of the solvent and hence loss of complex. 

Arylyne cyclization is an important reaction affording the formation of carbocycles in the synthesis of complex molecules. CT-Bonded metal salt polymer or organic moiety linked to the inorganic support, silaphenylmercuiic triflate, showed efficient catalytic activity for a variety of mercury(ll) trifluoromethanesulfonate [Hg(OTf)J-catalyzed reactions [104,132-134]. Examples described by Equations (8.36)-(8.43) present cyclo- and cycloisometization reactions leading to the synthesis of both carbocycles and heterocycles. 

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