简介：Aflexibleapproachtoethyl(3R,4S)-N-Boc-4-amino-3-hydroxy-5-phenylpentanoate(N-Boc-AHPPA-OEt),theγ-amino-β-hydroxyacidmoietyofhapalosinisdescribed.Thesyntheticmethodfeaturesaring-openingethanolysisofanactivatedN-Boc-lactam,whichisobtainedviaadiastereoselectivereductive-alkylationof(R)-malimidederivative.TheflexibilityofthemethodresidesintheintroductionofthealkylsidechainbyGrignardreagentaddition.

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简介：Inordertoinvestigatetheeffectsofmethylestermoietyonpolycyclicaromatichydrocarbons(PAHs)andNOxformationinbiodieselcombustion,thecombinedmodelsweredevelopedbasedondetailedmethylbutanoate(MB)oxidationmodelandn-butanemodel.Also,PAHsdetailedreactionmechanismandNOxformationmechanismwereaddedtothedetailedmodelstoformthecombinedmodels.Thecombinedmodelswereusedtocomparethecombustionofn-butaneandMBinashocktubesimulationtounderstandtheeffectsofmethylestermoiety.Theresultsindicatedthatcomparedwithn-butane,themethylestermoietyinMBleadstodifferentreactionpathways,moreCOandCO2formationandlessformationofPAHsprecursorssuchasethyleneandacetylene.Inaddition,abetterchemicalinsightintotheeffectsofmethylestermoietyonNOxformationwasgiven,whichwillhelptounderstandthecombustionprocessofbiodiesel.

简介：现在的工作试图综合thiazole的一个新有趣的系列基于包含diarylidenecyclohexanone一半5的聚酰胺<潜水艇class=“a-plus-plus”>-5<潜水艇class=“a-plus-plus”>用低温度答案polycondensation的f技术。新聚合物被thiazole的反应综合也就是基于单体，二度(2-aminothiazol-4-ylbenzylidene)cyclohexanone3与用NMP的不同脂肪族、芳香的二酸氯化物，并且面对无水的LiCl是催化剂。Adipoyl，sebacoyl，oxaloyl，terephthaloyl，isophthaloyl二氯化物和联本基dicarbonyl二氯化物被用作二酸氯化物。模型的结构象新聚合物一样的化合物4被正确元素、光谱的分析证实。那些聚合物的热性质被TGA和DTG大小评估并且相关到他们的结构的单位，在X光检查衍射分析，溶解度和viscometry大小旁边。为综合聚合物的固有的粘性在范围是0.61.03dL/g。在另一方面腐蚀象聚酰胺一样的单体3的禁止的性质5d并且5选择了例子的f在0.5mol/LH在碳钢上被执行2那么在40v的4

简介：Aseriesofnovel(S,S)-2,8-diazabicyclo[4.3.0]nonanecontainingbenzimidazolemoietywassynthesizedandtheirstructuresweredeterminedby1HNMRandHRMS.ThebiologicalactivityresultsshowedthatthesecompoundspossessedmoderateantifungalactivitytosomeplantpathogenousfungiandmoderateinsecticidalactivityagainstMythimnaseparataWalkerandCulexpipienspallens.Compounds6eand6fexhibitedgoodantibacterialactivityagainstSclerotiniasclerotiorum,PhytophthorainfestansandFusariumgraminearum.Thelethalityratesofcompounds6eand6kagainstMythimnaseparataWalkerwere100%at200mg/Landthelethalityratesofcompounds6hand6kagainstC.pippienspallenswere75%at2mg/L.

简介：Anovelβ-cyclodextrin(β-CD)derivativebearingdiethanolaminemoietywassynthesizedbyaconvenientmethodwith63%yield,andthenewhostcompoundwascharacterizedby(13)~C-NMR,FT-IRspectraetc,

简介：Thetwocompounds,2,2-dimethyl-4-S-(N,N-dimethyldithiocarbamato)-5-(1,2,4-triazol-l-yl)-propione(1)and2,2-dimethyl-4-S-(N,N-diethyldithiocarbamato)-5-(1,2,4-triazol-1-yl)-3-propione(2),werepreparedbyreactingN,N-dialkyldithiocarbamatesodiumwith2,2-dimethyl-4-bromo-5-(1,2,4-triazol-1-yl)-propione.Theirstructureswereidentifiedbyelementalanalysis,IRand^1HNMRspectroscopy.Thestructureof1hasbeendeterminedbyX-raysinglecrystalstructureanalysis.ItcrystallizesinmonoclinicsystemwithspacegroupP21/c,a=1.2315(3)nm,b=1.2057(2)nm,c=1.2532(3)nm,β=118.55(3)°,Z=4,V=1.6345(6)nm^3,Dc=1.221g/cm^3,μ=0.324mm^-1,F(000)=640,finalR1=0.0449.ThereisobviouspotentiallyweakC—H...Nintermolecularinteractioninthecrystal,whichstabilizesthecrystalstructure.Theresultofthebiologicaltestshowedthatthetwocompoundshavefungistasisandplantgrowthregulatingactivities.

简介：包含4-tert-butyltoluene一半的一系列新奇聚酰胺3a3d，用phosphorylationpolycondensation技术被准备。英尺红外和1HNMR技术被用来调查3a3d的化学结构。结果证实他们完全为3a3d同意了建议结构。3a3d有固有的粘性从0.71～1.67dL

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简介：Aseriesofnovel1H-benzimidazol-1-ylacetatesand1H-benzimidazol-1-ylpropionatescontaining1H-1,2,4-triazolemoietyweresynthesizedundermicrowaveirradiationbymulti-stepreactions,inyieldsof87-94%.TheirinvitroantifungalactivitiesagainstBotrytiscinereaandSclerotiniasclerotiorumwereevaluatedbymycelialgrowthratemethod.AllthetargetcompoundsexhibithighactivitiesagainstB.cinereawiththeEC50valuesof7.96-21.74μg/mL,higherthanthatofcarbendazim.

简介：六新光学地活跃并且flame-retardant(amide-imide)poly，在主要的链作为一个flame-retardant单位包含磷化氢氧化物一半的s白族5a鈥?f从六chiralN的直接polycondensation反应被综合，有二度(3-aminophenyl)的N鈥?(pyromellitoyl)-bis-L-amino酸3a鈥?f在中等在于的苯基磷化氢氧化物4N-methyl-2-pyrrolidone(NMP)，triphenyl亚磷酸盐(TPP)，钙氯化物(CaCl2)和pyridine。生产的聚合反应一系列光学地活跃poly(amide-imide)有好产量和0.34鈥?.70dLg的好固有的粘性的s?1。结果的聚合物充分借助于FTIR和1H-NMR光谱学，胶化浸透层析(GPC)，元素的分析，固有的粘性和溶解度测试被描绘。热性质和白族5a鈥?f的flame-retardant行为被调查使用热gravimetric分析(TGA和DTG)并且限制氧索引(LOI)。热分析(TGA和DTG)获得的数据表明这些聚合物显示出好热稳定性。而且，在TGA的高字符产量和好LOI值显示产生聚合物能够展出好火焰retardant性质。N，N鈥?(pyromellitoyl)-bis-L-amino酸3a鈥?f被pyromelliticdianhydride(1,2,4,5-benzenetetracarboxylicacid-1,2,4,5-dianhydride)的冷凝作用反应在量的收益准备1与L丙氨酸2a，L缬氨酸2b，L白氨酸2c，L异白氨酸2d，L苯基丙氨酸2e和L-2-aminobutyric在醋酸的酸2f答案。关键词光学地活跃-Flame-retardant聚合物-Poly(amide-imide)s-限制氧索引

简介：Twocalix[4]arenederivativescontaining1,2,3-triazolemoietyweresynthesizedviaK2CO3-catalyzed1,3-dipolarcycloadditionreactionbetweencalix[4]arene-basedazideandactivemethylenecompoundsingoodyields.Thestructuresofthetwocompoundssynthesizedhereinwerefullyconfirmedby1HNMR,,13CNMR,andMS（ESI）.Thethermalanalysisshowedthatthemasslossesofthesynthesizedcompounds4and5containing1,2,3-triazolegroupsaresimilartoeachother.