Webtreated potionwise with sodium borohydride *(13.17g, 0.348 mol) over 1.3h. The solution was then stirred at room temperature for lh andconcentrated in vacuo the residue partitioned between ethyl acetate and IN KHSO4. The organic phase was washed with saturated aqueious NaHCOg, brine, dried over anhyd MgS04, filtered and concentrated to give an oil. Web6 votes and 36 comments so far on Reddit

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WebTBSC1(66.3 g, 439 mmol, 1.1 equiv.) was added potionwise to the solution at 0 C, which immediately forms a white precipitate. The reaction was warmed to room temperature and stirred for 20 minutes, at which point starting material consumption was confirmed by TLC and LCMS. The reaction mixture was filtered to remove imidazolium chloride, and ... WebHybrid donor extractants are a promising class of compounds for the separation of trivalent actinides and lanthanides. In this paper, we present a new ligand from the bipyridyl-dicarboxylic acid diamide family—N,N’-diethyl-N,N’-bis(2,4,5-trimethylphenyl)-[2,2’-bipyridine]-6,6’-dicarboxamide. The synthesis of N-ethyl-2,4,5-trimethylaniline from pseudocumene by … god\u0027s-penny tc

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Web18 Sep 2003 · Diosgenin (25(R)-spirost-5-en-3β-ol) is the steroidal saponin which is isolated from the Mexican yam (Dioscorea).Estrogenic, progesterogenic and anti-inflammatory effects have been hypothesized for diosgenin due to its structural similarity to estrogen and progesterone precursors [].Diosgenin has been reported to lower serum cholesterol in … Webflocculating apparatus专利检索，flocculating apparatus属于·控制设备专利检索，找专利汇即可免费查询专利，·控制设备专利汇是一家知识产权数据服务商，提供专利分析，专利查询，专利检索等数据服务功能。 Web15 Sep 2011 · To an ice-cooled solution of 4-fluorophenylacetonitrile (3, 5.0 g, 37.0 mmol) and 1,5-dibromopentane (5.4 ml, 39.9 mmol) in DMF (50 ml) was added potionwise sodium hydride (60% dispersion in mineral oil; 3.2 g, 80.0 mmol) and the mixture was stirred at room temperature for 3 h. The mixture was poured onto ice-water and then extracted with AcOEt. book of maccabees in hebrew