Palladium-Catalyzed C–S Coupling: Access to Thioethers, Benzo[<i>b</i>]thiophenes, and Thieno[3,2-<i>b</i>]thiophenes
作者:Marius Kuhn、Florian C. Falk、Jan Paradies
DOI:10.1021/ol2016093
日期:2011.8.5
formation/cross-coupling/cyclization domino reaction using thiourea as a cheap and easy to handle dihydrosulfide surrogate has been developed. Structurally important biarylthioether, benzo[b]thiophenes, and thieno[3,2-b]thiophene scaffolds are provided in high yield.
已经开发出了第一个使用硫脲作为便宜且易于处理的二氢硫代用品的C-S键形成/交叉偶联/环化多米诺反应。以高收率提供结构上重要的联芳基硫醚,苯并[ b ]噻吩和噻吩并[3,2- b ]噻吩支架。
Iron(III) chloride (FeCl<sub>3</sub>)-catalyzed electrophilic aromatic substitution of chlorobenzene with thionyl chloride (SOCl<sub>2</sub>) and the accompanying auto-redox in sulfur to give diaryl sulfides (Ar<sub>2</sub>S): Comparison to catalysis by aluminum chloride (AlCl<sub>3</sub>)
作者:Xiaoping Sun、David Haas、Chyress Lockhart
DOI:10.1080/10426507.2016.1244206
日期:2017.3.4
GRAPHICAL ABSTRACT ABSTRACT The Lewis acids MCl3 (M = Fe and Al)-catalyzed electrophilic aromatic (ArH) substitution reactions with thionyl chloride (SOCl2) have been shown to give diaryl sulfoxide (Ar2SO) and the reduced diaryl sulfide (Ar2S). Under various selected conditions, the FeCl3-catalyzed reactions of chlorobenzene gave substantially much higher percent yields of Ar2S (Ar = p-ClC6H4) than
Nargund et al., Journal of the Karnatak University, 1958, vol. 3, p. 17
作者:Nargund et al.
DOI:——
日期:——
Sulfur analogues of polychlorinated dibenzo-<i>P</i>-dioxins, dibenzofurans and diphenyl ethers as inducers of CYP1A1 in mouse hepatoma cell culture and structure-activity relationships
AbstractThree sulfur containing compounds, 2,3,7,8 tetrachlorothianthrene (TCTA), 2,3,7,8 tetrachlorodibenzothiophene (TCDT), and 3,3,4,4 tetrachlorodiphenyl sulfide (TCDPS), were analyzed for their CYP1A1 inducing potencies – measured as aryl hydrocarbon hydroxylase (AHH) and 7 ethoxyresorufin O‐deethylase (EROD) activities – in mouse hepatoma cell culture Hepa 1 Marked differences in the induction potencies were observed among the three compounds studied and between 2,3,7,8 tetrachlorodibenzo p dioxin (TCDD) and its sulfur analogue The estimated EC50 values for TCDD, TCTA, and TCDT were about 8 pM, 700 pM, and 7 5 nM, respectively TCDPS did not elicit any AHH/EROD induction Comparative molecular field analysis (CoMFA) was not able to predict correctly the biological potency of TCTA and TCDT The most important reason for the poor performance of the model may be the positive point charge of sulfur in TCTA and TCDT
Kopponen Paeivi, Sinkkonen Seija, Poso Antti, Gynther Jukka, Kaerenlampi +, Environ. Toxicol. and Chem., 13 (1994) N 9, S 1543-1548