简介:Aseriesofethyl6-alkoxy-7-phenyl-4-hydroxy-3-quinolinecarboxylatesweredesignedandsynthesized.Theirstructureswereconfirmedby~1HNMR,~(13)CNMR,IRandHRMS.ThebiologicalactivitieswereprimarilyevaluatedagainstEimeriatenellaaccordingtoAnticoccidialIndex(ACI)methodinvivo.Theresultsshowedthatcompounds5e,5fand5iexhibitedanticoccidialactivitiesagainstE.tenellaat27mgkg~(-1).
简介:DBUH-Br3catalyzedselectiveconversionofsulfidestosulfoxidesinthepresenceofH2O2asoxidizingagentisdescribed.Thereactionwasperformedselectivelyatroomtemperatureandrelativelyshortreactiontimes.
简介:Theorientationoftheadditionof5-amino-3-benzylthio-1,2,4-triazoleanditsanalogues(pyrazole)(1)withthearylisocyanatecanbedirectedbycontrollingthereactiontemperatureandoneoftheproduct,5-amino-1-arylaminocarbonyl-3-benzylthio-1,2,4-triazole(pyrazole)(2),canrearrangeat170Ctoanotherproduct,5-arylureylene-3-benzylthio-1,2,4-triazole(pyrazole)(3).Aplausiblemechanismexplanationforthisrearrangementreactionwaspresented.Itwassuggestedthattherearrangementreactioncouldbereferredtothethermodynamicstranspositionleadingtothepredominant5-arylureylene-3-benzylthio-1,2,4-triazoleenergypreferentially.
简介:Halfsandwichirondicarbonylcomplex[η5-C5H3(t-Bu)2]Fe(CO)2Cl(1)reactswith1,2-dilithiumdiselenocarboraneLi2Se2C2B10H10(2)togiveabinuclearironcarboranecomplex[η5-C5H3(t-Bu)2]2Fe2(CO)3*Se2C2B10H10(3).TheX-raydiffractionanalysisofcomplex3revealsthatoneoftheironatomsischiral.
简介:Aseriesofbenzo-fusedheteroaromaticcompoundswith5-,6-and7-memberedtings,suchasbenzimidazole,quinoxalineand1H-1,5-benzodiazepinederivatives,weresynthesizedthroughcondensationreactionofo-pheny1-enediaminewithary1aldehydesorketones.Theexperimentalconditionswerecarefullyexamined,andtheproductswerecharacterizedby^1HNMR,^13CNMR,MS,IRandelementalanalyses.Inaddition,thestructureofabenzodiazaepinederivativewith7-memberedringwasconfirmedbysinglecrystalX-raydiffractionanalysis.
简介:Rare-earthcompoundsolidsuperacidSO42-/TiO2/La3+wasprepared.Itscatalyticactivitywasexaminedunderdifferentsyntheticconditionsfortheesterificationofpropanoicacidandn-butylalcoholasprobingreaction.Theoptimumconditionswerealsofound,whichwerethepH=8,thedepositingtimewas24h,themassfractionofLa(NO3)3usedinsolidsuperacidwas5%,theconcentrationofH2SO4was1.25mol/L,thesoakingtimeinH2SO4was16handthecalciningtemperaturewas500°C.TheethyloleatewassynthesizedfromoleicacidandethanolinthepresenceofSO42-/TiO2/La3+.Theoptimumreactionconditionswereobtainedwhichwerethereactiontimewas6h,molarratioofoleicacidtoethanolwas1:4andthemassfractionofcatalystwas4%.
简介:Afacilegreenlow-costcontrollablehydrothermal-thermalconversion(HTC)processfortheuniformhighaspectratioCaSiO3nanowireshasbeendevelopedusingabundantCaCl2·2H2OandNa2SiO3·9H2Oasrawmaterialswithoutanyorganicadditive.Thenanowiresexhibitedatransparentcharacteristicfromtheultraviolettovisibleregion,andtheCaSiO3:1.2%Tb3+nanophosphorswithwellpreserved1DmorphologydemonstratedstronggreenluminescencewithCIEcoordinatesof(x=0.3144,y=0.5912).Thepresentworkdefinitelyrevealsthenanowiresasapromisingstructureandfunctionintegratedhostcandidateforgreen-emittingluminescentmaterialsinlightdisplaysystemsandoptoelectronicdevices.
简介:金属有机配合物在磁性、荧光、分子吸附和半导体等多功能材料方面有着潜在的应用价值.通过水热方法合成了一种新型零维铈(Ⅳ)配合物ECe(dipic)。]·2(Hpa)·2H2O(2,6一Hzdipic=2,6一吡啶二羧酸,pa=对氨基吡啶),并通过X-射线衍射、元素分析、红外光谱和热重对该化合物进行了表征.该化合物属于单斜晶系,P2,/f空间群,a=1.09437(10)nm,6—2.05263(18)nm,c=1.58776(14)nm,β=106.0850(10)°,Z=4,V=3.427(1)nm2,Dc=1.670g/cm。,Mf一861.72,A(MoKa)=0.071073nm,μ=1.41mm-1,F(000)=1728,R=0.0396,wR一0.1073,符合,〉2d(I)的独立衍射点4997个.铈(1V)离子被3个完全去质子化的羧基围绕,整个分子实体显负电,平衡电荷由质子化的对氨基吡啶提供.在该配合物中,N—H…O和o~H…O氢键对增强配合物的稳定性起了重要作用.
简介:Anefficientsynthesisoffunctionalized4H-chromenesbythetandemreactionofb,g-unsaturatedaketoesterswith2-naphthols,1-naphthols,and1,3-dihydroxynaphthaleneshasbeenaccomplishedwithhighselectivityandexcellentyieldsinthepresenceofacatalyticamountofbismuthtriflate[Bi(OTf)3,5mol%]undermildconditions.Thefunctionalized4H-chromenesynthesisandourprevious2Hchromenehemiacetalsynthesiscouldcomplementeachothertoenrichreactiondiversity.
简介:有核心壳的合成nanoparticles组织的Cross-linked-cyclodextrinpolymer/Fe3O4在carboxymethyl-cyclodextrin的表面上经由生气连接反应被准备(厘米--CD)在-cyclodextrin的修改Fe3O4nanoparticles由把epichlorohydrin用作crosslinking的碱的答案代理人。准备合成nanoparticles的形态学,结构和磁性被传播电子显微镜学(TEM)调查,Fourier变换红外线(FTIR)spectrometry,X光检查衍射(XRD)测量,thermogravimetric分析(TGA)和颤动的样品magnetometry(VSM)分别地。
简介: