1-苯基-2-氰基-3-氨基-3a,3b,6,7-四氢化苯并[4,5]茚的合成及晶体结构

标题化合物C_20H_18N_2是由2-氰-3-苯基-3-(1-萘酮-2-基)丙腈在低价钛试剂作用下还原成环而得。结构通过单晶X-射线衍射分析确定,其晶体属于三斜晶系,空间群P, a = 9.169(2), b = 9.520(2), c = 10.276(2) , a = 91.09(1), = 107.95(1), = 111.05(2), V = 787.8(3),Mr = 286.36 ?, Dc = 1.207 g/cm3, Z = 2, m(MoKa) = 0.071 mm-1, F(000) = 304, R = 0.0399, wR = 0.1008。单晶X-射线分析表明,五员环(C(7)~C(11))采用信封式构象,而六员环(C(10)~C(15))则采用半椅式构象,同时,分子间氢键作用形成二聚体。     

微波辐射下4-(4-羟基-3-甲氧基)苯基-3,3,6,6-四甲基-1,8-二氧代1,2,3,4,5,6,7,8,9,10-十氢吖啶的合成和晶体结构

标题化合物C24H29NO4?1/2C2H5OH稨2O)由香兰素、5,5-二甲基-1,3-环己二酮、醋酸铵在微波辐射下干反应并经95%乙醇重结晶而得C24H29NO4穀2(C2H5OH稨2O)晶体。结构通过单晶X-射线衍射法确定,其晶体属单斜晶系,空间群P21/n, a = 9.810(2), b = 14.516(3), c = 17.008(3) ? b = 101.03(2), V = 2377.2(8) ?, Z = 4, Mr = 427.52, Dc = 1.195 g/cm3 , m(MoKa) = 0.082 mm-1, F(000) = 920。晶体结构用直接法解出,经全矩阵最小二乘法对原子参数进行修正,最终的偏离因子为R = 0.0406, wR = 0.0892。X-射线衍射分析结果表明,吡啶环和与之稠合的2个六员环均为信封式构象。     

7,7-二甲基-2-对溴苯基-4-苯基-5-氧代-1,4,5,6,7,8-六氢化-6H-喹啉的合成及晶体结构

标题化合物C23H22BrNO是由1-(4-溴苯基)-3-苯基-2-丙烯-1-酮与5,5-二甲基-1, 3-环己二酮在N, N-二甲基甲酰胺(DMF)中在NH4OAc催化下反应而得。结构通过单晶X-射线衍射分析确定,其晶体属于单斜晶系,空间群C2/C, a = 19.678(4),b = 13.571(2),c = 17.311(3) 牛琤 = 118.74(1),Mr = 408.33, V = 4055(1) ?,Dc = 1.338 g/cm3, Z = 8, m (MoKa) = 2.038 mm-1, F(000) = 1680, R = 0.0539,wR = 0.1369。X-衍射分析表明,六元环C(10)C(13)C(16)C(17)采用半椅式构象:原子C(10),C(11),C(12),C(16)和C(17)在同一个平面内,而原子C(13)远离平面为0.3282 牛闷矫嬗?个苯环的夹角分别为41.09, 81.97,2个苯环的夹角为75.87。另外在晶体结构中,存在1个分子间氢键。     

微波辐射下2,7,7-三甲基-3-乙氧羰基-4-(3-硝基苯基) -5-氧代-1,4,5,6,7,8-六氢喹啉的合成和晶体结构

标题化合物C21H24N2O5是由间硝基苯甲醛、达咪酮、乙酰乙酸乙酯、醋酸铵在微波辐射下干反应而得。结构通过单晶X-射线衍射法确定,其晶体属斜方晶系,空间群 Pbcn, a =17.953(3), b =15.206(4), c =14.299(3), V =3904.(2)3, Mr =384.42, Z =8, Dc =1.308g/cm3 , m(MoKa) =0.094mm-1, F(000)=1632。晶体结构用直接法解出,经全矩阵最小二乘法对原子参数进行修正,最终的偏离因子为R=0.0493, wR=0.1078。X-射线分析结果表明,吡啶环为船式构象,与之稠合的六元环为信封式构象。     

N,N(-双(邻甲苯基)-3,6-二甲基-1,4-二氢-S-四嗪-1,4-二甲酰胺的晶体结构

邻甲苯基异腈酸酯与3,6-二甲基-1,6-二氢-S-四嗪在催化剂4-二甲胺基吡啶存在下反应,生成标题化合物( C20H22N6O2, Mr = 378.43 )。经X-射线单晶结构分析表明此晶体属单斜晶系,P21/c空间群,a = 11.151(4),b = 15.318(2),c = 11.352(2)?,β=103.85(2)°,V = 1882.7? 3,Z = 4,μ= 0.093mm-1,Dc = 1.413g/cm3,F(000) = 800。结果表明,该化合物的两个酰胺基处于S-四嗪环的1,4位,而四嗪环本身呈船式构象。     

2-氨基-3-氰基-7,7-二甲基-4-苯基-5-氧代-5,6,7,8-四氢-4H-苯并吡喃的合成和晶体结构

标题化合物C18H18N2O2是由亚苄基丙二睛和5,5-二甲基-1,3-环己酮在乙二醇中反应2小时得到,结构通过单晶X-射线衍射法确定,其晶体属单斜晶系,空间群P21/c,Mr=294.34,a = 11.3070(1), b= 9.4750(1),c = 14.919(2) ,β= 99.34(1)埃琕 = 1577.1(3) 3,Z = 4,Dc=1.240Mgm-3,μ=0.082mm-1,F(000)=624, 最终的偏离因子为R=0.0381,wR=0.0961,在分子结构中存在3个环:苯环(A)、吡喃环(B)及与吡喃环稠合的六员环(C)。A与B、A与C及B与C之间的两面角分别为 92.5°、85.7°和8.2°。     

反,反-2-氨基-1,3,3-三氰基-5-硝基-4,6-二对甲苯基环己烯的合成和晶体结构

标题化合物C23H19O2N5 (Mr=397.44)是由对甲苯基亚甲基丙二腈与硝基甲烷在N,N-二甲基甲酰胺(DMF)中反应而得。结构通过单晶X-射线衍射分析确定,其晶体属于单斜晶系,空间群P21/a,a=12.712(2),b=13.071(4),c=13.368(2),b=106.37(1), V=2131.2(8)?,Dc=1.239g/cm3, Z=4, m (MoKa)=0.82cm-1, F(000)=832。R=0.056。结构显示六员环上的对甲苯基与硝基处于反式,说明该加成反应具有立体选择性。     

微波辐射下2-氨基-7,7-二甲基-3-乙氧羰基- 4-(2-呋喃)基-5-氧代-5,6,7,8-四氢-4H- 苯并吡喃的合成和晶体结构

标题化合物C18H21NO5是由2-呋喃亚甲叉氰乙酸酯和5,5-二甲基-1,3-环己酮在醋酸铵存在下用微波辐射反应得到,结构通过单晶X-射线衍射法确定,其晶体属三斜晶系,空间群P 睿琈r =332.36,a =11.232(2),b =13.048(2),c =13.274(3),α=105.7(1),β=95.68(2),g =109.56(1)? V=1752.4(6)3,Z=2,Dc=1.276Mg·m-1, =0.093mm-1,F(000)=704, 最终的偏离因子为R=0.0431,wR=0.0973,在分子结构中平面 1 (呋喃环) 与平面2 ((C(5)、 C(6)、C(9)、O(1))之间的二面角为 84.70°, 平面2 与平面 3 (C(1)、C(4)、C(5)、C(6)) 之间的二面角为 2.9°, 平面 1 与平面3 之间的二面角为 85.9°。吡喃环和与吡喃环合的六员环为信封式结构。     

4-苯基-2-苯偶氮基-1-硫代-3,4-二氮唑硫酮-5的合成和晶体结构

4-苯基-2-苯偶氮基-1-硫代-3,4-二氮唑硫酮-5(C14H10N4S2)是双硫腙与二硫化碳发生加成闭环反应时获得。结构通过单晶X-射线衍射法确定,标题化合物是单斜晶系, 空间群为C2/c,晶胞参数a = 25.169(5), b = 3.9690(8), c = 30.130(6) ?,β= 113.79(3)°, V = 2754.0(1)?3, Mr =298.38, Dc =1.439 g/cm3 , Z = 8, μ(MoKα)=3.80cm－1, F(000)=1232 。最终偏差因子为R = 0.0335, wR = 0.0861。分子结构中硫代二氮唑五员杂环显示出共平面结构,最大偏差0.010(1)?。C=S键长1.634(2)     

3-(2-羟基苯基)-5-苯基-6-乙氧羰基-2-环己烯酮的合成与晶体结构

合成了3-(2-羟基苯基)-5-苯基-6-乙氧羰基-2-环己烯酮.通过元素分析、红外光谱、紫外光谱、核磁共振氢谱和质谱对其组成和结构进行了表征.利用X射线衍射分析方法测定了它的晶体结构.该化合物的晶体属单斜晶系,空间群P21/c,a=1.41946(17)nm,b=0.58445(7)nm,c=2.1756(3)nm,β=104.795(2)°,V=1.7450(4)nm3,Z=4,Dc=1.280 g·cm-3,F(000)=712,μ=0.088mm-1,R1[I＞2σ(I)]=0.0627,wR2[I＞2σ(I)]=0.1484.晶体结构测定结果表明化合物分子中的环己烯部分为半椅式构象,分子间通过氢键形成具有16元环的二聚体.     

Synthesis and Crystal Structure of Methyl(7,7-Dimethyl-2-amino-4-(4-chlorophenyl)-5-oxo-5,6,7,8-tetrahydro-4H-benzo-[b]-pyran-3-yl)Carboxylate

<正>The title compound methyl (7,7-dimemyl-2-amino-4-(4-chlorophenyl)-5-oxo-5,6,7,8-tetrahydro-4H-benzo-[b]-pyran-3-yl) carboxylate (C19H20ClNO4, Mr = 361.81) was synthesized and crystallized. The crystal belongs to triclinic, space group P 1 with a = 8.519(2), b = 10.346(2), c = 11.481(3) A, α = 108.16(1), β = 107.78(2), γ= 91.83(2)°, Z = 2, V = 906.5(3) A3, Dc = 1.326 g/cm3, μ(MoKα) = 0.234 mm-1, F(000) = 380, R = 0.0467 and wR = 0.1270 for 3142 observed reflections (I > 2σ(I)). X-ray analysis reveals that the C(7), C(8), C(9), O(1), C(10) and C(11) atoms form a six-membered ring which adopts a boat conformation. In the ring, the distances of C(8)-C(9) and C(10)-C(11) are 1.332(3) and 1.357(3) A, respectively, which indicates that they are C=C double bonds. Another six-membered ring (C(8)-C(9)-C(15)-C(14)-C(13)-C(12)) adopts the half-chair confonnation. In addition, there are intermolecular hydrogen bonds in the crystal structure.     

Synthesis and Crystal Structure of Ethyl （2-Amino-4-（2-chlorophenyl）-4H-benzo-[h]-chromene-2-yl） Formate

1 INTRODUCTION 2-Aminochromene is an important class of compounds as the main compounds of many natu- rally occurring products which can be used as cos- metics and pigments[1] and potential biodegradable agrochemicals[2～4]. Inorganic solid supports as c…     

Crystal Structure of 4—（4—chlorophenyl）—7,7—dimethyl—2,5—dioxo—1,2,3,4,5,6,7,8—octahydroquinoline

1 INTRODUCTION Since the discovery of the pharmacological effects of 1,4-dihydropridines(1,4-DHPs) as calcium channel blocks[1], a great deal of work has been directed towards synthesis of the novel 1,4-DHPs acting as calcium antagonists[2, 3]. In fact, it is well-established that slightly modified structures on the DHP exhibit a calcium agents effect[4, 5] ; however, two fused rings have been less well-studied. By refluxing equivalent amounts of dimedone, aromatic aldehyde Meldrum抯 …     

3-邻氯苯基-3-(5,5二甲基-3-羟基-2-环己烯-1-酮-2-基)丙酸乙酯的合成和晶体结构

标题化合物C19H23O4Cl（4）是由邻氯苯甲醛（1）与5，5-二甲基-1，3-环己二酮（2）、2，2-二甲基-1，3-二氧六环-4，6-二酮（3）在乙醇中反应而得。结构通过单晶X-射线衍射分析确定，其晶体属于单斜晶系，空间群晶体结构用直接法解出，使用全矩阵最小二乘法对原子参数进行修正，最后的偏离因子R＝0．034，Rw＝0．042。在晶体结构中存在一个共轭的烯醇结构。单晶X-射线分析表明；平面1（C（1）～C（6）、Cl）和平面2（C（8）～C（10）、C（12）、C（13））之间的两面角为97．11°，原子C（7）呈变形的四面体构型。     

Synthesis and Crystal Structure of 1-（4-Chlorophenyl）-2-cyano-3-amino-3a-hydroxy-3a,3b ,6, 7-te trah y drobenzo[ 4,5]indene

1 INTRODUCTION dimerization of α,β-unsaturated ketones[10]. Herein we discuss the crystal structure of the title compound In the early seventies three groups of investiga- synthesized by the reaction of 2-cyano-3-(4-chloro- tors[1~3] have established that low-valent titanium phenyl)-3-(1-tetralon-2-yl) induced by TiCl4/Zn system. can abstract oxygen from ketones or aldehydes, lead- When 2-cyano-3-(4-chlorophenyl)-3-(1-tetra- lon-2-yl) ing to the formation of olefins. A variety of other…     

Crystal Structure of 2-(4-Fluorophenylamino)-2-thiomethyl acetophenone

1mThODUCTIONThioacetalshavebeenwellstudied,becauseoftheirapplicationsinorganicsyn-thesist1i.However,aketohemithioacetalshaveseldombeeninvestigated.Inthispa-Per,wediscussedthecrystalstructureofthetitlecompoundsynthesizedbythereac-tionofabenzoylhemithioacetal(2-hydroxy-2-thiomethylacetoPhenone)and4-fluthroaniline.Sinceknowledgeofthemolecularandcrystalstructureofthetitlecom-PoundwasconsideredusefulforunderstandingthemechanismofthereactionandchemicalproPertiesofaketohemithioacetal,theX-raycr…     

Synthesis and Crystal Structure of 4-（4-Bromophenyl）- 3,4-dihydro-6-methyl quinolin-2（1H）-one

The title compound (C16H14BrNO) has been synthesized by the reaction of p-tolylamine, Meldrum’s acid and 4-bromo-benzaldehyde, and its structure was characterized by IR, 1H NMR and X-ray single-crystal diffraction. The crystal belongs to monoclinic, space group P21/n with a = 7.6850(11), b = 8.3004(11), c = 21.301(3) , β = 95.110(2)°, V = 1353.4(3) 3, Mr = 316.19, Z = 4, Dc = 1.552 g/cm3, μ(MoKα) = 3.028 mm-1, F(000) = 640, the final R = 0.0345 and wR = 0.0768. X-ray analysis reveals that the atoms of C(1), C(2), C(3), C(4), C(5) and N(1) form a six-membered ring of boat conformation.     

X-ray Structure of 1- (3' -Phenyl-4' -morpholinyl-2' 5' - dithiole-1' - ylidene)-3, 4-biscarboethoxy-2-thionaphthalene

1INTR0DUCTIONa-Thiocarbonylthioformamideshavebeensynthesizedsince1980[l-23,however,thereisn0reP0rtofthesecomP0undsrelatedtheirpropertiesandreactivities(3).Ac-cordingtothepublishedpapers('-",adithioketone,adithioesterandadithioth-ioesteraresnitablefort4 2JcycloadditionwithalkenicandacetylenicdienophileS.Wewanttoknowwhethera-thiocarbonylthioformamideshavethesamecharacters,thereforethereactionofathiobenzoylthioformmorpholine(1)withdiethylacetylenedicarboxylate(2)wasexplored.Theredultsshowth…