acetates and xanthates for the synthesis of thiazol-2-yl ethers with remarkable regioselectivity has been developed. Various oxime acetates, whether derived from aryl ketones or alkyl ketones, or natural product cores are suitable for this conversion. Unique dihydrothiazoles were also obtained when both reaction sites were methine. Mechanistic studies indicated that imino copper(III) intermediates were involved
Xanthates and Trithiocarbonates Strongly Inhibit Carbonic Anhydrases and Show Antiglaucoma Effects in Vivo
作者:Fabrizio Carta、Atilla Akdemir、Andrea Scozzafava、Emanuela Masini、Claudiu T. Supuran
DOI:10.1021/jm400414j
日期:2013.6.13
Dithiocarbamates (DTCs) were recently discovered as carbonic anhydrase (CA, EC 4.2.1.1) inhibitors. A series of xanthates and a trithiocarbonate, structurally related to the DTCs, were prepared by reaction of alcohols/thiols with carbon disulfide in the presence of bases. These compounds were tested for the inhibition of four human (h) isoforms, hCA I, II, IX, and XII, involved in pathologies such
the preparation of a variety of biologically interesting amido (thio)xanthates has been developed. By the proper choice of a potassium (thio)xanthate salt, a cyclic or acyclic imine, and an acyl chloride as substrates a broad scope with respect to the substituents can be realized. This operationally simple one-pot method proceeds under mild and environmentally friendly conditions while potassium chloride
Transition metal complexes of organothiophosphorous ligands V.Some aryl esters and amides of dithiophosphoric acid and their nickel(II) and cobalt(II and III)complexes
decasulfide reacted with phenoxyethanol, α and β-naphthol, ortho-toluidine, ortho-aminophenol and ortho-phenylenediamine to give aryl esters or amides of dithiophosphoric acids. These were used as ligands in the synthesis of some nickel(II) and cobalt(II and III) complexes. With para-toluidine only the amide (p-CH3C6H4NH)3PS was isolated.
摘要四磷十硫化碳与苯氧基乙醇,α和β-萘酚,邻甲苯胺,邻氨基苯酚和邻苯二胺反应,生成二硫代磷酸的芳基酯或酰胺。这些在某些镍(II)和钴(II和III)配合物的合成中用作配体。用对甲苯胺仅分离出酰胺(p-CH 3 C 6 H 4 NH)3 PS。
Direct Photoexcitation of Xanthate Anions for Deoxygenative Alkenylation of Alcohols
作者:Hong-Mei Guo、Bin-Qing He、Xuesong Wu
DOI:10.1021/acs.orglett.2c00889
日期:2022.5.6
In this report, we identify xanthate salts as a unique class of visible-light-excitable alkyl radical precursors that act simultaneously as strong photoreductants and alkyl radical sources. Upon direct photoexcitation of xanthate anions, efficient deoxygenative alkenylation and alkylation of a wide range of primary, secondary, and tertiary alcohols have been achieved via a one-pot protocol, avoiding