Acidity-Controlled Indolylation of 3, 3-Bis(ethylthio)acrylate

CO2 hydrogenation to C5+ hydrocarbons over K‐promoted Fe/CNT catalyst: Effect of potassium on structure–activity relationship

“…The specific surface area of the catalysts exhibited a unique trend with the increase of K content, which first increased to 177.1 m 2 /g due to the improved dispersion of microcrystalline particles and the reduced particle size, following decrease to 156.2 m 2 /g owing to the K monomer layer generated on the iron surface. This phenomenon has been certified by You et al [ 38 ]…”

“…[ 35,36 ] Xiong et al [ 37 ] proved that the Fe/CNT catalysts promoted by potassium and sodium not only suppressed the production of methane but also increased the distribution of olefins and selectivity of C 5+ in FTS reaction. You et al [ 38 ] found that adding alkali metals to non‐supported Fe‐based catalysts could significantly improve the CO 2 conversion and C 5+ selectivity. Specifically, the catalysts modified by K and Rb achieved better performance.…”

Complementary and Regioselective Synthesis of Isomeric 3-[Isoxazol-3(or 5)-yl]indoles from β-Ethylthio-β-indolyl-α,β-unsaturated Ketones

“…-Ethylthio--indolyl-,-unsaturated ketones 1 are readily prepared by trifluoroacetic acid or iron(III) chloride mediated selective desulfitative carbon-carbon cross-coupling reaction of indoles and -oxoketene dithioacetals. 17,[23][24][25] In order to obtain optimal reaction conditions for complementary and regioselective synthesis of both 3 and 4, we commenced our investigation on the cyclocondensation of 1a (0.25 mmol) and hydroxylamine hydrochloride (2; 0.5 mmol) as model substrates (Table 1). Initially, the cyclocondensation reaction was performed in the presence of NaOEt (0.75 mmol, 3 equiv) in refluxing EtOH for 8 h, affording the desired product 3a in 88% yield (Table 1, entry 1), which was confirmed by spectral and analytical data as well as comparison with the authentic sample.…”