5,12-二硫杂-7,14-二氮杂-5,7,12,14-四氢并五苯及其相关化合物二阶非线性光学性质的理论研究

在ZINDO方法基础上,按完全态求和(SOS)公式编制了计算分子二阶非线性光学系数β_ijk、β_u的程序.研究了不同取代基在5,12-二硫杂-7,14-二氮杂-5,7,12,14-四氢并五苯侧环取代衍生物及相关化合物的结构、光谱和二阶非线性光学性质。结果表明:侧环上取代推、拉电于基团对增大二阶光学非线性都有利;分子共平面,共轭作用强,对增大二阶光学非线性有利.     

一锅法合成新型7-苯基-1,4,5,6,7,8-六氢喹啉酮衍生物

以5-苯基-1,3-环己二酮,醛,乙酰乙酸乙酯(或乙酰丙酮)和乙酸铵为原料,在无水乙醇中经一锅反应合成了14个新型的7-苯基-1,4,5,6,7,8-六氢喹啉酮衍生物,总收率85%~95%,其结构经¹H NMR, ¹³C NMR, IR和HR-MS表征。采用X-ray单晶衍射研究了2-甲基-4,7-二苯基-5-氧代-1,4,5,6,7,8-六氢喹啉顺反异构体(5a和5a′)的晶体结构。结果表明：5a空间群为C2/c, a=9.458 35(19) ,b=19.789 0(4) ,c=11.040 9(2) , α=90°, β=105.614(2)°, γ=90°,V=1 990.28(7) ³, Z=4, μ=0.673 mm^-1, F(000)=824; 5a′空间群为C2/c, a=9.770 2(5) , b=19.981 0(10) , c=10.430 1(4) , α=90°, β=98.361(5)°, γ=90°, V=2 014.51(17) ³, Z=4, μ=0.665 mm^-1, F(000)=824。     

Photooxidative dehydrogenation of Δ8-drimen-and Δ8-11-homodrimen-7-ones into α,α ′-dienones

An efficient two-step procedure for photooxidative dehydrogenation of drimane and 11-homodrimane compounds containing an 8-en-7-one structural unit into α,α′-dienones was elaborated. The method is based on the transformation of ketones into the respective enol acetates followed by photosensitized oxygenation. Methyl 7-oxo-11-homodrima-5,8-dien-12-oate, 5,6-dehydro-7-ketoisodrimenine, 11-acetoxydrima-5,8-dien-7-one and 11,12-diacetoxydrima-5,8-dien-7-one were prepared in high yields starting from methyl 7-oxo-11-homodrim-8-en-12-oate, 7-oxoisodrimenine, 11-hydroxydrim-8-en-7-one and 11,12-diacetoxydrim-8-en-7-one, respectively. Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 4, pp. 678–682, April, 2006.     

"Met-Cars"外接氢化合物Ti8C12H4和Ti8C12H8的Ab Initio研究

用量子化学从头算方法，对Ｔｉ８Ｃ１２（Ｔｄ）进行了几何构型优化，结果表明，Ｔｉ３Ｃ１２（Ｔｄ）的化学动力学性质不稳定，化学性质活泼，在此基础上进行了其外接氢化物的性质研究，从理论上预测了Ｔｉ８Ｃ１２Ｈ４（Ｔｄ）和Ｔｉ８Ｃ１２Ｈ８（Ｔｄ）几何构型的稳定性和化学反应活性。由Ｔｉ８Ｃ１２（Ｔｄ）和Ｔｉ８Ｃ１２Ｈ８（Ｔｄ）稳定性分析得出：Ｔｉ８Ｃ１２Ｈ４（Ｔｄ）构型最稳定，而Ｔｉ８Ｃ１２Ｈ８（Ｔｄ）和Ｔｉ     

Efficient synthesis of onoceranediol from 12-hydroperoxy-8α,12-epoxy-11-bishomodrimane

An efficient one-step synthesis of the diacetate of the tetracyclic triterpenoid onoceranediol (4) by radical cleavage of the readily available 12-hydroperoxy-8α,12-epoxy-11-bishomodrimane is described. Drim-9(11)-en-8α-yl acetate (7) is formed in this reaction as a byproduct. Onoceranediol diacetate 4 is converted into onoceranediol on treatment with LiAlH₄, and acetate 7 is transformed into drim-9(11)-en-8α-ol on saponification. Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 11, pp. 2571–2573, November, 2005.     

Synthesis of a New Ligand Containing 1,7—Diaza—12—crown—4 and the Application in Asymmetric Cyclopropanation Reaction

A new chiral multidenate ligand (S,S)-1,7-bis(4-benzyloxazolin-2-yl-methyl)-1,7-diaza-12-crown-4 1 has been synthesized and used as ligand in the copper catalyzed asymmetric cyclopropanation of 1,1-diphenylethylene.     

新型尼龙214,414,614,814,1014和1214的合成与表征

用熔融缩聚法基于十四碳二酸合成了一系列偶偶尼龙，包括尼龙2 14，4 14， 6 14，8 14，10 14，12 14。用红外光谱、元素分析、核磁共振、差示扫描热分析 、热失重分析、热机械分析、粘度法对合成尼龙的结构与性能进行了表征。同时还 初步研究了尼龙12 14的物理性能，发现其物理性能介于尼龙66和聚乙烯之间。     

2, 3-二氢蒽并(1, 2-b)(1, 4)恶嗪-7, 12-二酮的合成

2-溴-1, 4-二羟基蒽醌与氨基醇, 缩合可以生成2-取代氨基-1, 4-二羟基蒽醌, 但在较高温度下并延长反应时间, 部分产物可以进行分子内脱水而进一步环化为2, 3-二氢蒽并(1, 2-b)(1, 4)恶嗪-7, 12-二酮的衍生物。用MS和NMR确定其结构。     

STUDY ON POLYMERIZATION MECHANISM OF 3, 9,-DIALLYL-3, 9, -DIBENZYL-1, 5, 7, 11-TETRAOXASPIRO [5, 5] UNDECANE

A new monomer, 3,9-diallyl-3, 9-dibenzyl-1, 5,7,11 - tetraoxa- spiro [5,5] undecane (6) was prepared by the reaction of 2- allyl- 2' - benzyl- propanediol - 1.3 with dibutyltin oxide, and then treated with CS_2. Monomer 4 could be initiated by cationic initiators to give a viscous polymer (white powder in the case of polymerization at 0℃). Upon the NMR and IR spectra of the obtained polymer, the components and their relative amount were estimated. The polymerization mechanism was discussed.     

Synthesis of 11-hydroxydrim-8(9)-en-7-one and 11,12-dihydroxydrim-8(9)-en-7-one from drim-8(9)-en-7-one

A synthetic route to 11-hydroxydrim-8(9)-en-7-one and 11,12-hydroxydrim-8(9)-en-7-one, valuable key intermediates for the preparation of naturally occurring biologically active drimanic sesquiterpenoids, starting from easily available drim-8(9)-en-7-one was developed. 11-Hydroxydrim-8(9)-en-7-one was obtained by peracidic oxidation of the enol acetate of drim-8(9)-en-7-one. 11,12-Dihydroxydrim-8(9)-en-7-one was synthesized from drim-8(9)-en-7-one by two routes, namely, by a five-step procedurevia 11-hydroxydrim-8(9)-en-7-one and by bromination of drim-8(9)-en-7-one with NBS to give 11,12-dibromodrim-8(9)-en-7-one followed by its acetoxylation and deacetylation. Deceased Translated fromIzvestiya Akademii Nauk, Seriya Khimicheskaya, No. 1, pp. 95–98, January, 2000.     

Synthesis of 11-hydroxydrim-8(9)-en-7-one and 11,12-dihydroxydrim-8(9)-en-7-one from drim-8(9)-en-7-one

A synthetic route to 11-hydroxydrim-8(9)-en-7-one and 11,12-hydroxydrim-8(9)-en-7-one, valuable key intermediates for the preparation of naturally occurring biologically active drimanic sesquiterpenoids, starting from easily available drim-8(9)-en-7-one was developed. 11-Hydroxydrim-8(9)-en-7-one was obtained by peracidic oxidation of the enol acetate of drim-8(9)-en-7-one. 11,12-Dihydroxydrim-8(9)-en-7-one was synthesized from drim-8(9)-en-7-one by two routes, namely, by a five-step procedurevia 11-hydroxydrim-8(9)-en-7-one and by bromination of drim-8(9)-en-7-one with NBS to give 11,12-dibromodrim-8(9)-en-7-one followed by its acetoxylation and deacetylation. Deceased Translated fromIzvestiya Akademii Nauk, Seriya Khimicheskaya, No. 1, pp. 95–98, January, 2000.     

络合吸附波测定微量锑(Ⅲ)

在0.02 mol/LHAc-NaAc(pH 4.9)介质中,研究了Sb(Ⅲ)-7-(1-苯偶氮)-8-羟基喹啉-5-磺酸钠(BQ)体系电化学行为及其影响因素.Sb(Ⅲ)-BQ络合物在滴汞电极上于-0.58～-0.61 V间产生一良好的还原波,其一阶导数峰峰值I′p与Sb(Ⅲ)浓度在8.0×10-7～1.0×10-5mol/L范围内呈线性关系,检出限为4.5×10-7 mol/L.用该法测定冶金样品中痕量Sb(Ⅲ),取得了满意结果.对电极反应机理进行了探讨.     

7-(对甲酰基苯偶氮)-8-羟基喹啉-5-磺酸的合成及其双波长分光光度法测定镓

7－（对甲酰基苯偶氮）－8－羟基喹啉－5－磺酸是一新显色剂。该试剂在微碱性介质中（pH＝7．5）与镓形成黄色络合物。络合物λmax＝392nm，摩尔吸光系数ε392＝2．24×104L·mol-1·cm-1。同时在500nm呈现负峰，用双峰观波长法测定镓ε392～500＝6．89×104L·mol-1·cm－1，灵敏度是单波长法的三倍多．线性范围0～2．0×10－5mol／L。用拟定的方法测定了掺硅的GaAS材料及岩石中的镓，加入回收率为106％～110％；方法的相对标准偏差小于1．6％。     

2,6-二甲基-3-苯基-4a-对甲苯基-7-苯甲酰基-4a,5,6,12-四氢-1H,7H-1,3-噁嗪并[3,2-d][1,5]-苯并二氮杂-1-酮的合成及晶体结构

通过2-甲基-4-对甲苯基-1-苯甲酰基-2，3-二氢-1H－1，5-苯并二氮杂与由不对称1-苯基-2-偶氮-1，3-丁二酮热解产生的a-羰基烯酮的[2＋4]环加成反应制备了标题化合物（C34H30N2O3，Mr=514．62），用X射线衍射测定了其单晶结构。晶体属单斜晶系，空间群为P21／n，a=11．560（1），b=19．058（3），c=13．207（2）A，β=106.82（1）°，V=2785.2（7）A3，Z=4，Dc=1．230g．cm-3，MoKa（λ=0.71073A），μ=0．064mm-1，F（000）=1088，2278个可观测衍子射点，R=0．046，Rw=0．049。分子骨架为由苯环、具有类扭船式构象的七元二氮杂环和略微扭曲的唑酮环构成的三环体系。     

Stereoselective Effects in Reactions of Metal Complexes III. Asymmetric hydrogenation of 5, 7, 7, 12, 14, 14-hexamethyl-1, 4, 8, 11-tetraazacyclotetradeca-4, 11-diene-nickel (II)

The catalytic hydrogenation in acidic solution (pH ～ 2) of the title compound

1 In order to represent this and the related compounds by meaningful abbreviations, we shall adopt the numerotation system proposed in the literature [8] [12]. The complete abbreviation of the title compound is [Ni(5, 7, 7, 12, 14, 14-Me₆-[14]-4, 11-diene-1, 4, 8, 11-N₄)]²⁺. As in the present work the 14-membered ring system with six methyl groups remains unchanged, we shall use [Ni(4, 11-dieneN₄)]²⁺ and [Ni(4, 11-aneN₄)]²⁺ and [Ni(4, 11-aneN₄)]²⁺ for the complex with the unsaturated and saturated ligand, respectively.

[Ni(4, 11-dieneN₄)]²⁺ (I) has been studied. The reaction yields only C-meso- 5, 7, 7, 12, 14, 14-hexa-methyl-1, 4, 8, 11-tetraaza-cyclotetradecane-nickel (II) (C-meso-[Ni(4, 11-aneN₄)]²⁺), when meso-[Ni(4, 11-dieneN₄)]²⁺ is the starting material. Rac-[Ni(4, 11-dieneN₄)]²⁺ yields the unstable α-C-rac-[Ni(4, 11-aneN₄)]²⁺. When optically active [Ni(4, 11-dieneN₄)]²⁺ is reduced, optically active α-[Ni(4, 11-aneN₄)]²⁺ is obtained, which in neutral or basic solution shows mutarotation due to conversion into optically active β-[Ni(4, 11-aneN₄)]²⁺ no racemization is observed. Reaction with cyanide ions yields the optically active free tetramine ligand. The reaction mechanism of this asymmetric synthesis is discussed.     

New Fluoromanganate(III) Hydrates: Mn3F8 · 12H2O and AgMnF4 · 4H2O

Single crystals of fluoride hydrates Mn₃F₈ · 12 H₂O and AgMnF₄ · 4 H₂O have been prepared and characterized by X-ray methods. Mn₃F₈ · 12 H₂O crystallizes in the space group P1 (a = 623.0(3), b = 896.7(4), c = 931.8(4) pm, α = 110.07(2)°, β = 103.18(2)°, γ = 107.54(2)°, Z = 1); AgMnF₄ · 4 H₂O crystallizes in the space group P2₁/m (a = 700.9(2), b = 726.1(1), c = 749.4(3) pm, β = 107.17(3)°, Z = 2). Both structures contain Jahn-Teller-distorted [Mn(H₂O)₂F₄]^? anions as well as crystal water molecules and exhibit a complex hydrogen bond network between anions and cations, i. e. [Mn(H₂O)₆]²⁺ for the first and a polymeric [Ag(H₂O)₂]^? cation for the second compound.     

溶胶-凝胶法制备多孔晶体材料C12A7-C1~-

利用溶胶-凝胶法制备了多孔晶体材料C12A7-Cl~-(Ca_(12)Al_(14)O_(32)Cl_2),制备凝胶的原料是四水合硝酸钙、九水合硝酸铝、氯化钙、尿素和乙二醇.混合溶液经过搅拌2-3 h形成溶胶,再经350℃热处理后形成凝胶体,最终在流动氩气气氛中1000℃烧结后得到材料.用X射线衍射,场发射扫描电子显微镜,热重分析,电子顺磁共振和离子色谱等方法表征合成的C12A7-Cl~-多孔晶体材料.结果表明,利用溶胶.凝胶法成功地生成了C12A7结构,氯负离子是材料中存储的主要负离子.此外,从C12A7-Cl~-晶体材料表面发射的氯负离子也被飞行时间质谱观测到.上述结果说明溶胶-凝胶法可被用于制备C12A7-Cl~-晶体材料.     

A sequential injection method for the fluorimetric determination of aluminum in drinking water using 8-hydroxy-7-(4-sulfo-1-naphthylazo)-5-quinoline sulfonic acid

A robust and simple sequential injection (SI) method for the assay of aluminum ions in drinking water is described. The method is based on the complex formation between aluminum and 8-hydroxy-7-(4-sulfo-1-naphthylazo)-5-quinoline sulfonic acid (HSNQ). The fluorescence of the complex is monitored at an emission wavelength of 492 nm with excitation at 357 nm. The HSNQ concentration, aspirated reagent and sample volumes were optimized simultaneously using 3(3) full factorial design. The optimum operating conditions are aspirated sample and reagent volumes of 90 and 70 microL, respectively, and HSNQ concentration of 20 microM. With these conditions linear calibration curves were obtained from 100 to 800 ppb. The detection limit was 4 ppb. The maximum relative standard deviation of the method was 1.43% (n=5). The method was successfully applied for the determination of aluminum in drinking water samples.     

Solvent Extraction of Alkaline Earths with 1-Phenyl -3-Methyl 4 Stearoylpyrazol - 5 - One and Topo

Abstract

The synergic extraction of Ca, Sr, and Ba ions from aqueous solutions into cyclohexane or benzene containing 1- pheny 1 - 3 - methyl - 4 - stearoylpyrazol - 5 - one (HPMSP) and TOPO has been studied. Quantitative extraction (log D>2) was attained at pH>5.4 for Ca, pH>6.5 for Sr, and pH>7.3 for Ba when cyclohexane containing 0.05 M HPMSP and 0.01 M TOPO was used, and the corresoponding values for benzene were 6.5, 7.8, and 8.4. Extracted species were M(PMSP)₂(TOPO)₃ (M=Ca, Sr, Ba) for cyclohexane and Ca(PMSP)₂(TOPO)₃ and Sr (or Ba) (PMSP)₂(TOPO)₂ for benzene.