Preparation and alkylation of substituted β-hydroxydithiocinnamic acids
作者:F.C.V. Larsson、S.-O. Lawesson
DOI:10.1016/s0040-4020(01)93857-8
日期:1972.1
been prepared. By use of so-called ion-pair extraction technique a general method has been found for the preparation of β-hydroxydithiocinnamic esters in high yields. From these esters both symmetrical and unsymmetrical ketenemercaptals have been synthesized, and in some cases thio-Claisen rearrangement and subsequent ring-closure reactions have been observed.
Synthesis and Characterization of Novel Dinuclear Copper(I) Complexes. Dimerization of [CuL(PPh<sub>3</sub>)<sub>2</sub>] (L = methyl 3-hydroxy-3-(<i>p</i>-R-phenyl)-2-propenedithioate)
作者:Ivan García-Orozco、Ma. Carmen Ortega-Alfaro、José G. López-Cortés、Ruben Alfredo Toscano、Cecilio Alvarez-Toledano
DOI:10.1021/ic0515958
日期:2006.2.1
copper(I) complexes 6a-e from methyl 3-hydroxy-3-(p-R-phenyl)-2-propenedithioate ligands. These complexes were characterized by IR and 1H, 13C, and 31P NMR spectroscopy. The expected O,S-coordination mode was confirmed by the X-ray diffraction studies of 6b and 6e. The unexpected dimerization of 6b-e leads to the formation of four novel dinuclear copper(I) compounds (7b-e). The dinuclear complex structure
The synthesis of 4-(trifluoromethyl)-2,3-dihydrothiazoles from α-enolic dithioesters and imidoyl sulfoxonium ylides has been achieved under thermal conditions. This transformation is catalyst-free, additive-free, and operationally simple, and it proceeds via a formal insertion of alkenyl S−H generated in situ from dithioesters into ylides followed by an intramolecular annulation. This approach further