学科分类
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460 个结果
  • 简介:Treatmentof4-amino-3-(1-aryl-5-methyl-1,2,3-triazol-4-yl)-5-mercapto-1,2,4-triazoles/2-amino-5-(1-aryl-5-methyl-1,2,3-triazole-4-yl)-1,3,4-thiadiazoleswithbenzaldehyde,acetoneandω-bromoacetophenonewastestedandcompared.ThetitlecompoundsSchiffbases,amides,imidazolo[2,1-b]-1,3,4-thiadiazolesand7H-s-triazolo[3,4-b]-1,3,4-thiadiazineshavebeenconfirmedbyelementalanalyses,^1HNMR,IRandMSspectra.AllthecompoundshavealsobeenscreenedfortheirantibacterialactivitiesagainstB.subtilis,S.aureusandE.coli.

  • 标签: 合成 抗菌活性 4-氨基-3-(1-芳基-5-甲基-1 2 3-三唑-4-基)-1 3 4-噻重氮 衍生物
  • 简介:  Enantioimericallypure1,l'-bi-2-naphthol(BINOL)1anditsderivativesareimportantchiralligandsandauxiliariesforanumberofasymmetrictransformations1suchasaldolcondensations,alkylations,Diels-Alderreactions,Michaeladditions,epoxidations,etc.Opticallypure1andtheirderivativeshavealsobeenusedextensivelyinchiralrecognition,chiralseparationandintheconstructionoffunctionalisedmaterials2.Furthermore,(R)-and(S)-BINOLarealsofundamentalstartingmaterialsforthesynthesisofalargevarietyofotherchiralbinaphthylssuchasMOP(2c),NOBIN(2d)andBINAP(2e).Asaresultthedevelopmentofefficientandeconomicmethodsforthepreparationofopticallypure1hasattractedmuchattentioninrecentyears3andnovelmethodsfortheresolutionof(±)-1continuetobedeveloped.……

  • 标签:
  • 简介:Apracticalprotocoltoobtain1,1'-binaphthyl-2,2'-diaminewasdevelopedfrom2-naphtholand2-naphthylhydrazineundermildconditions:solvent-free,125-130℃,atmosphericpressure.Theconvenientproceduremakestheprocessamenableforlarge-scalesynthesisoftheversatilecompound.

  • 标签: 联萘 合成 萘酚 压下 氨基 功能化合物
  • 简介:New[1+1]and62-membered[2+2]Schiffbasemacrocyclescontaininga2,6-diamidopyridinesubunithavebeensynthesizedbycondensationreactionoftheprecursorspyridine-2,6-dicarboxamideand1,10-bis(20-formylphenyloxy)decaneinthepresenceofphosphoricacidviaaone-potprocess.Thecyclocondensedproductswereeffectivelyisolatedbygelcolumnchromatographyandcharacterizedby~1HNMR,FTIR,massspectrometryandX-rayanalysis.Thetwomacrocycleshaveatwistedstructure,andnotanopen‘circular’conformationinthesolidstate.

  • 标签: 大环化合物 一锅法合成 凝胶柱层析 X射线分析 反应合成 FTIR
  • 简介:Thetitlecomplex,[La(baec)1/2(H2btec)1/2(H2O)]n(H4btec=1,2,4,5-benzenetetracarboxylicacid)(1)wassynthesizedbythehydrothermalreactionof1,2,4,5-benzenetetracarboxylicdianhydridewithLa(NO3)3·6H2OinH2O,andcrystallizesinthetriclinicsystem,spacegroupP-1withα=0.64403(3)nm,b=0.94500(4)nm,c=0.96380(5)nm,α=88.535(2)°,β=100.314(2)°,γ=76.6470(10)°,V=1.69968(10)nm^3,Z=2,andfinalR=0.0274,Rw=0.0735.In1,eachLa(Ⅲ)ioniscoordinatedbyeightoxygenatomsfromsixcarboxylategroupsandonecoordinatedwatermolecule.TwodifferentcoordinstionmodesofH4btecwerePresentinthestructure,oneofwhichcontainstwoprotonatedcarboxylategrougpstobalancethecharge.

  • 标签: 水热合成 镧配合物 结构 1 2 4 5-苯四羧酸
  • 简介:SYNTHESISANDANTI-HUMANIMMUNODEFICIENCYVIRUS-(HIV-)ACTIVITYOF9-(-PHOSPHONYLMETHOXYETHYL)ADENINE()ANDITSREGIOISOMER3-(-PHO...

  • 标签: HIV-1
  • 简介:存取2-substituted-N1-carbethoxy-2,3-dihydro-4(1H)的一条灵巧、有效、新奇的途径-quinazolinones是被代替的N-carbethoxyanthranilamide的冷凝作用用p-toluenesulfonic酸在refluxing2,2,2-trifluoroethanol或hexafluoroisopropanol与烷基,aromatic或异种aromatic醛开发催化剂。

  • 标签: 三氟乙醇 六氟异丙醇 氟溶剂 溶剂效应 喹啉氮杂化合物
  • 简介:利用Gaussian03软件包,采用多种方法和多种基组对CCl和CCl2分子的基态结构进行优化计算,优选出B3P86/6-311+G(3df)方法对CCl分子进行计算得到基态为X2Π、键长RCCl=0.16442nm,谐振频率ωe=886.3062cm-1;优选出B3P86/6-311G(2df)方法对CCl2分子进行计算得到基态为X1A1,平衡核间距RC—Cl=0.17194nm、键角βCl—C—Cl=109.2457°、离解能De=3.4635eV,并计算出了谐振频率和力常数,其结果与实验值符合很好.并采用多体展式理论推导出CCl2自由基的解析势能函数,其等值势能图准确呈现出CCl2分子的结构特征及能量变化曲线.由此讨论了Cl+CCl和C+ClCl分子反应的势能面特征.可用于研究该分子的微观反应动力学特性.

  • 标签: CCL CCl2 分子结构 势能函数
  • 简介:一系列1-(N-(2-(2-methoxyphenylthio)本甲基)-N-methylamino-3-aryloxypropan-2-ols衍生物基于5-HT1A/SSRI药设计策略被设计并且综合。综合混合物为他们的双5-HT1A/5-HTT活动被评估。

  • 标签: 抗抑郁药 药物合成 杀螨好 5-羟色胺
  • 简介:过量臼齿的卷VmEand运动学的粘性为丙烯乙二醇monomethyl醚(1-methoxy-2-propanol)的二进制混合物作为作文的一个函数被测量了,MeOCH2CH(哦)我,丙烯乙二醇monoethyl醚(1-ethoxy-2-propanol),EtOCH2CH(哦)我,丙烯乙二醇monopropyl醚(1-propoxy-2-propanol),PrOCH2CH(哦)我,丙烯乙二醇monobutyl醚(1-butoxy-2-propanol),BuOCH2CH(哦)我,和丙烯乙二醇tert丁基醚(1-tert-butoxy-2-propanol),t-BuOCH2CH(哦)我与1-butanol臼齿的体积是的过量为系统2-butanol+1-methoxy-2-propanol,和+1-propoxy-2-propanol越过为有1-butanol的所有系统的全部范围ofcomposition否定、积极,为为系统2-butanol+1-ethoxy-2-propanol,和+1-tert-butoxy-2-propanol的系统2-butanol+1-butoxy-2-propanol,和变化符号否定。从试验性的数据,在从xii的动态粘性的偏差被计算了。两过量臼齿的卷和粘性偏差被方法用一个Redlich-Kister类型多项式方程相关为二进制系数和标准错误的评价最少平方。

  • 标签: 过剩摩尔量 混合物 烷氧基 化学反应
  • 简介:一系列1-[2-(2-methoxyphenylthio)本甲基]-4-arylpiperazines衍生物基于5-HT1A/SSRI药设计策略被设计并且综合。综合混合物为他们的双5-HT1A/5-HTT活动被评估。

  • 标签: 抗抑郁药 药物合成 芳基哌嗪 杀螨好
  • 简介:2-Phenyl-1,2,3-triazole-4-formylhydrazine(2)waspreparedbyhydrazinolysisofthecorrespondingester1.Reactionof2withCS2/KOHgavetheoxadiazolederivatives(3)whichvia,Mannichreactionwithdifferentdialkylaminesfurnished3-N,N-dialkylderivatives(4a-c).Also,condensationof2withappropriatearomaticacidinPOCl3yieldedoxadiazolederivatives(5a-c),orwithaldehydesandketonesaffordedhydrazones(6a-c).Cyclizationof(6a-c)withaceticanhydridegavethedesireddihydroxadiazolederivatives(7a-c).Ontheotherhand,reactionofdithiocarbazate(8)withhydrazinehydrategavethecorrespondingtriazolederivative(9)whichontreatmentwithcarboxylicacidsinrefluxingPOCl3yieldeds-triazole[3,4-b]-1,3,4-thiadiazolederivatives(10a-b).ThestructuresofalltheabovecompoundswereconfirmedbymeansofIR,1HNMR,MSandelementalanalysis.

  • 标签: 2-Phenyl-1 2 3-triazole 1 3 4-oxadiazole
  • 简介:2,5-piperazinedione的新衍生物,1,4-di(2-methoxyphenyl)-2,5-piperazinedione(I),被N-2-methoxyphenylchloroacetamide,和它的结构的cyclocondensation反应综合被元素的分析,红外,1HNMR和单身者描绘水晶X光检查衍射方法。水晶属于单斜晶的系统,有统一房间尺寸a=0.56934(10)nm的空格组P21/c,b=1.3880(2)nm,c=1.00329(17)nm,=90.376(3)?e

  • 标签: 1 4-二(2-甲氧基苯基)-2 5-哌嗪二酮 合成 晶体结构 特性
  • 简介:Newphosphorus-andselenium-containingheterocyclyes,1,3,2,6-dioxaphosphaselena-cyclooctanes(la-1h),weresynthesizedbythereactionofbis(2-hydroxyethyl)selenidewithRP(X)Cl2whereR=alkoxyl,aroxyl,arylandX=Oorlonepair.Theirstructuresweredeterminedbyspectro-scopiesandelementalanalysesandfinallyconfirmedbytheX-raycrystallographicanalysisof1c.Themolecularstructuresoftheheterocycleswerediscussedintermofconformationalanalysis.

  • 标签: HETEROCYCLES SYNTHESIS STRUCTURE
  • 简介:Thehydrolysisreactionof(±)-2-acetamido-3-hydroxy-1-(4-nitrophenyl)-1-propanone[(±)-1],anintermediateofchloramphenicol,wasstudiedandthreedifferentproductswereobtainedrespectivelyunderdifferentreactionconditions.Theresolutionofhydrolysisproduct(±)-2-amino-3-hydroxy-1-(4-nitrophenyl)-1-propanone[(±)-3]wascarriedout.Aprocessofcrystallization-inducedasymmetrictransformationwasobservedandupto76%oftheopticallypureenantiomerwasobtainedintheresolutionof(±)-3.

  • 标签: Hydrolysis Resolution EPIMERIZATION
  • 简介:Novelsulfur-containingcompounds(3a–3c,4a–4c)wereobtainedinethanolwith1,3-diphenyl-2-propanoneasthestartingmaterial.Theadvantagesofthisprocedureweremildreactionconditions,simpleprotocol,andhighyields.ThestructuresoftheproductswerecharacterizedbyIR,1HNMR,MSandelementaryanalysis.Thecrystalofthenewcompound4abelongstomonoclinic,spacegroupC2witha=18.727(3),b=6.5179(9),c=13.7576(18),b=131.0610(10)°,V=1266.2(3)A3,Z=2,Dc=2.136g/cm3,μ=1.078mm-1,F(000)=843,R=0.0490andwR=0.1247for3211observedreflectionwithI>2δ(I).X-rayanalysisrevealsthatthemoleculeisnotsymmetrical,themolecularstructureisstabilizedbyweakp–pstackinginteractions,andnoclassicalhydrogenbondscanbeobserved.

  • 标签: 硫醇 苄基 显示 合成 寺院 结构稳定
  • 简介:Themononuclearcomplex,[NtCl2(trzCHzCHzCOPh)4]·6H2O(trz=1,2,4-triazole),wassynthesizedanditsstructurewasdeterminedbysinglecrystalX-raydetermination.Itcrystallizesinthemonoclinicsystem,spacegroupP21/c,withlatticepa-rameters:a=0.80391(2)nm,b=1.06215(2)nm,c=2.90133(2)nm,β=94.792(1)°andZ=2.EachnickelatomiscoordinatedbyfourNatomsoftriazolefromfourβ-(1,2,4-IriHole-1-yl)propiophenoneligandsandtwochlorideanionsinarrangementwithoctahedralcoordinationgeometry.Inadditiontothecoordinatingnickelcomplex,therearesixunco-ordinatedwatermolecules.TheNi—Ndistanceis0.24865(8)nmandtheNi—Ndistaneesareintherangeof0.2072(2)to0.2099(2)nm,respectively.Inthesolidstate,theUtiecom-poundformsthreedimensionalnetworkstructurethroughhy-drogenbonds.Theintermolecularhydrogenbondsconnectthe[NiCl2(C2H2N3CH2CH2COPh)4]andH2Omoieties.Thedeepgreencrystalswerealsoexaminedbyelementalanalysis,FT-IRandUVspectra,whichareinagreementwiththestructuralda-ta.

  • 标签: 单晶结构 二氯镍 镍(Ⅱ)配合物 六水配合物 ·6H2O 八面体
  • 简介:Using2-bromo-1-methylpyridimiumiodideascarboxylactivatingagent,10ansa-macrolactamswerepreparedconvenientlyfromthecorrespondingseco-precursorw-aminoacidsintheyieldsof78-2%.

  • 标签: LACTAM ansa-macrolactam CYCLIZATION lactamization.