Regioselective hydroxysulphenylation of derivatives of allylicalcohols and amines
作者:Zakaria K M Abd El Samii、Mohamed I Al Ashmawy、John M Mellor
DOI:10.1016/s0040-4039(00)85193-x
日期:1986.1
Reaction of manganic acetate with diphenyidisulplilde in dichloromethane-trifluoroacetic acid in the presence of allylic esters or amides of allylamine gives trifluoroacetoxysulphides and hence by ready hydrolysis vicinal hydroxysulphides. The regiochemical outcome can be controlled by selection of either an acetyl- or trifluoroacetyl derivative.
Regio- and Stereoselective Allylic Trifluoromethylation and Fluorination using CuCF<sub>3</sub> and CuF Reagents
作者:Johanna M. Larsson、Stalin R. Pathipati、Kálmán J. Szabó
DOI:10.1021/jo4010074
日期:2013.7.19
Copper-mediated trifluoromethylation of allylic chlorides and trifluoroacetates was performed using a convenient Cu–CF3 reagent. The reaction is suitable for selective synthesis of allyl trifluoromethyl species. Mechanistic studies indicate that the reaction proceeds via a nucleophilic substitution mechanism involving allyl copper intermediates. The analogous Cu–F reagent was suitable for fluorination