简介:NineteenL-N-2-hydroxyethylaminoacidsandL-N,N-bis(2-hydroxyethyl)aminoacidswerepreparedfromthereactionofchlorohydrinwithL-alanine,L-valine,L-leucine,L-isoleucine,L-phenylalanine,L-serine,L-thrcunine,L-glutamicacid,L-asparticacidandglycine.L-N,N,N’,N’-tetra(2-hydroxyethyl)cystinewaspreparedbythereactionofL-cystinewithchlorohydrin.
简介:Thecrystalandmolecularstructureofcopper(Ⅱ)dimericcomplexofS-methyl-B-N-(pyridineN-oxide-2-ylmethylidene)dithiocarbazatewithacetonitrile,[CuL(CH3CN)]2(ClO4)2,wasdeterminedbyX-raydiffraction.ThecomplexcrystalizesinmonoclinicsystemwithspacegroupP21/n,a=7.685(2),6=20.160(6),c=10.847(5)A,B=107.89(3),Z=2,Dc=1.788g/cm3,F(000)=835.8,u=18.17cm-1(Moka,R=0.057.EachCu(Ⅱ)ioninthecomplexissurroundedbyadistortedsquarepyramidal.ThebasalplaneiscomprisedofS,NandOatomsofoneligandtogetherwithaNatomofthesolvent--acetonitrile,whiletheaxialpositionisoccupiedbytheSatomoftheotherligand.ThebondlengthofCu-S(bridging)is3.038A.andCu-Cudistanceis3.700A.
简介:AnewchemilurninescencelabelN-(β-carboxypropionyl)luminol(CPL)wasusedtolabelsheepanti-humanIgG(SaHIgG).Thelabeledantibodywasstableandcouldbedetectedatleastdownto10-17~10-16mol.Themolarincorporationratiowasestimatedtobe0.26molofCPLpermolofSaHIgG.TherewerenoapparentchangesintheimmunoreactivityofthelabeledSaHIgGandinthequantumefficiencyoftheCPLafterlabeling.
简介:一系列新奇phthalimides对七phytopathogenic真菌在vitro为抗真菌的活动作好准备并且测试:Rhizoctoniasolani,镰刀霉oxysporumf.sp。cucumerinum欧文,Botrytiscinerea,Fulviafulva,SclerotiniasclerotiorumdeBary,Phytophthoracapsici,Botryosphaeriaberengeriama。结果证明保持6-methylpyridin-2-yl的结构的那些混合物对Phytophthoracapsici和Botrytiscinerea展出了好活动。
简介:AnovelacrylicmonomerbearingaromaticetherealitygroupN-(p-phenoxy-phenyl)methacrylamide(MAPOA)wassynthesizedandpolymerized.ThefluorescencespectraofMAPOAanditspolymerwerestudied,showingthatthepolymerdisplaysastrongerfluorescencethanitsmonomeratthesamechromophoreconcentration.ThefluorescenceofP(MAPOA)wasquenchedbyaddingelectrondeficiencymonomerssuchasMMA,ANetc..Itisanotherexampleofshowingthe"fluorescencestructuralself-quenchingeffect"aswereportedpreviously,fromwhichitisdemonstratedagainthatthisphenomenonisnotanaccidentalonebutacommoneffectforacrylicmonomersbearingelecton-donatingchromophores.ThephotopolymerizationofANsensitizedbyMAPOAandP(MAPOA)wasstudied.Thekineticequationofthepolymerizationwasobtainedandrepresentedasfollows:Rp∝[MAPOA]0.38×[AN]0.78,Rp∝[P(MAPOA)]0.33×[AN]0.71TheoverallactivationenergiesweredeterminedtobeEa=24.22kJ/mol(MAPOA)andEa=26.31kJ/mol[P(MAPOA)]respectively.ThefluorescenceanalysisoftheresultedP(AN)showedthatthesensitizeralsoenteredintotheP(AN)chains.AmechanismoftheformationofachargetransfercomplexandfreeradicalinitiationwassuggestedforthephotopolymerizationofANsensitizedbyMAPOAandP(MAPOA).
简介:AseriesofnovelN-(3-furan-2-yl-1-phenyl-1H-pyrazol-5-yl)amidesderivativesweredesignedandsynthesized.Theirstructureswereconfirmedby1HNMR,13CNMRandHRMS.Alltitlecompoundswereevaluatedfortheirherbicidalandantifungalactivities.Preliminarybioassayresultsindicatedthatthetitlecompoundsshowedgoodtomoderateherbicidalactivityat1000mg/L.Compound6qpresentedthebestactivityagainstDigitariasanguinalis(L)Scop.,AmaranthusretroflexusL.andArabidopsisthalianawithaninhibitiondegreeoffive.Compound6dalsoshowedaninhibitiondegreeoffiveagainstD.sanguinalis.Inaddition,at50mg/L,mostcompoundsexhibitedgoodinvitroantifungalactivityagainstSclerotiniasclerotiorum,withcompound6cshowingover90%antifungalactivityagainstS.sclerotiorumandPelliculariasasakii.
简介:ReactionsofCuSCNwithtetramethylthiuramdisulfideinCH3CNinthepresenceofstyreneandN,N,N',N',N'-pentamethyldiethylenetriaminegaverisetoanewcopper(Ⅰ)complexofN,N'-dimethyldithio-cabamate{[Cu(S2CNMe2)]2}n.ThetitlecompoundcrystallizedinthetriclinicP-1spacegroupwithlatticeparametersα=0.7610(4)nm,b=0.8911(4)nm,c=0.9268(5)nm,α=68.66(1)°,β=83.88(2)°,γ=79.31(2)°,V=0.5748(5)nm^3,Z=2.Thecompoundhasaunique1DchainstructurecomposedofCuSCSCuSCSeight-memberedringsandapairofCu-Sbonds,thestructureofwhichhasbeendeterminedbysingle-crystalX-raycrystallography.Theisolationofthiscompoundmayprovidesomehelpfulinformationforthecauseoftheinductionperiodsofthereverseatomtransferradicalpolymerization.
简介:Twonewdicyanamidecoordinationpolymers,{Mn(dmpz)[N(CN)2]2}2(1)and{Cu(dmpz)[N(CN)2]2}2(2)(dmpz=3,5-dimethylpyrazole),weresynthesizedandcharacterizedbysinglecrystalX-raydiffractionanalysisandIRspectroscopy.In1and2themetalionshavetwodifferentcoordinationmodes,whereoneiscoordinatedtofourdicyanamideanionsandtwomonodentatedmpzmoleculestoformaslightlydistortedoctahedralgeometry,whiletheotheradoptsoctahedralgeometry,surroundedbyfournitrileNatomsandtwoamideNatomsofthedicyanamideanions.Bothcomplexescontaintwoalternatingchainsthatareparalleltoeachother.
简介:在微波辐射条件下,以2-氨基-5-苯并呋喃基-1,3,4-噻二唑和N.取代三氯乙酰苯胺为原料,在固体氢氧化钠作用下,“一锅法”高产率合成了10种N-(5-苯并呋喃基-1,3,4-噻二唑-2-基)-NL芳基脲,并通过IR、^1HNMR和元素分析表征了目标产物的结构.
简介:
简介:(R)-N-乙酰四氢噻唑-2-硫酮-4-羧酸在三乙胺存在下同乙酰氯反应得到光学活性产物(R)-N-乙酰四氢噻唑-2-硫酮-4-羧酸.用半经验的量子化学方法研究反应物及产物的电子结构和反应热焓.
简介:Aseriesofaromaticimineswerereducedtocorrespondingaminesinexcellentyieldsby2-phenyl-N,N-dimethylbenzimidazoline(PDMBI)photochemicallyinthepresenceofmagnesiumperchloride(Mg(ClO4)2).AMg2+mediatedphotoinducedelectrontransfermechanismwasproposed.
简介:采用HF/DFT的混合泛函PBE0和UPBE0优化了配合物[Os(PH3)2(CN)2(N^N)](其中N^N=2,2′-吡啶)的基态和激发态结构.在基态和激发态结构的基础上,利用含时密度泛函理论(TD-DFT)方法,结合极化连续介质(PCM)模型分别计算了它在二氯甲烷(1)、甲醇(2)、气态(3)和乙腈(4)溶液中的吸收和发射光谱.研究结果表明:优化得到的几何结构参数和相应的实验值符合得非常好.在极性较大的溶剂(2和4)中Os—P(1)和Os—C(1)键较长,Os—N(3)键较短,溶剂的极性会影响配合物的电子云分布.配合物在1-4溶剂中的最低能吸收和发射均来自分子轨道68→71的激发,该激发被指认为[d(Os)+π(CN)+π(N^N)→π*(N^N)]的跃迁具有混合的MLCT/LLCT特征.配合物在1-4溶剂中的最低能吸收和发射分别在471,410,488和445nm以及598,536,634和545nm,表明随着溶剂极性的逐渐增大(3〈1〈4〈2),最低能吸收和发射发生明显的蓝移.这显示出通过改变溶剂极性可以调节配合物的发光颜色.
简介:Anovelsupportedliquidphasefilmcatalyst:SupportedPdCl2-(n-C4H9)4N+Cl-moltensaltswasfoundtobeaneffectivecatalystwithgoodstabilityforselectivehydrodechlorinationofCCl2F2(CFC-12)toitsalternativesCH2F2andCHClF2.AdditionofCoCl2,GaCl3andCuCl2toPdCl2-(n-C4H9)4N+Cl-modifiesthecatalyticperformanceofsupportedmoltensalts.