Synthesis and Crystal Structure of N—（1‘’‘’—Phenyl—2‘’‘’—hydroxyethyl）—2,3—naphthylenedicarboximide

IntroductionThe design and the synthesis of new chiral ox-azoline[1,2 ] and C2 symmetric bis( oxazoline) ligandsand the application of their metal complexes inasymmetric catalytic reactions have inspired manyscientists to great exertions in recent years[3— 8] .Our interest has been focussed on the studies ofenantioselective transition metal catalysis ofhetero-cyclic ligands[9— 11] . In the synthesis of our new de-signed ligands,what is crucial is to select a rigidcyclic backbone. Bis( oxazo…     

1,2—双（1‘—苯基—3’—甲基—5‘—氧代吡唑—4’—基）—1,2…

用萃取法合成了１５种１，２－双（１＇－苯基－３＇－甲基－５＇－氧代吡唑－４＇－基）－１，２苯二酮（ＢＰＭＯＰＰ，简作Ｈ２Ｌ）稀土配合物。元素分析确定其化学组成为ＲＥ２Ｌ３·ｎＨ２Ｏ。通过电子光谱、红外光谱、核磁共振谱、热谱、摩尔电导等进行了表征，并讨论了配合物的性质。     

4‘—甲氧基—2’,7—二羟基黄烷酮的合成

２－羟基－４－甲氧基甲氰基苯乙酮与２－甲氧基甲基－４－甲氧基苯甲醚经缩合，环化，除保护基等反应合成了４’－甲氧基－２’，７－二羟基黄烷酮。     

1—（5‘—甲氧羰基—2’—羟基苯甲酰基（—1—（2‘—甲氧苯甲酰基）甲烷与Ac2O和HC...

邻羟基二苯甲酰基甲烷与Ａｃ２Ｏ和ＨＣ（ＯＥｔ）３反应通常是ＨＣ（ＯＥｔ）３作为酰化剂，得到３－苯甲酰基色酮。本文报道５－甲氧羰基－２－羟基苯甲酰基－（２＇－甲氧苯甲酰基）甲烷与Ａｃ２Ｏ和ＨＣ（ＯＥｔ）ｓ反应时，是Ａｃ２Ｏ而不是ＨＣ（ＯＥｔ）作为酰化剂，生成３－苯甲酰基－２－甲基色酮。其结构经ＮＭＲ、ＭＳ、ＩＲ和ＥＡ证实。并对其反应机理作了讨论。     

2—[2‘—（4’—甲基—苯并噻唑）偶氮]—5—二甲氨基苯甲酸与钯（Ⅱ）显色反应…

合成了新试剂２－［２＇－（４＇－甲基－苯并噻唑）偶氮］－５－二甲氨基苯甲酸，并研究了其与钯（Ⅱ）的显色反应。实验表明，在５０％乙醇介质中，该试剂与钯（Ⅱ）反应生成１：１络合物，其最大吸收波长为６９８ｎｍ，表观摩尔吸光系数为５．８３×１０＾４Ｌ．ｍｏｌ＾－１．ｃｍ＾－１。     

用2—（2‘—咪唑偶氮）苯酚—4—磺酸作显色剂测定铁

本文研究了咪唑偶氮苯酚－４－磺酸与Ｆｅ（Ⅱ）的显色反应条件，应用拟定的方法测定了菠菜、芹菜、人发、天然水中微量铁的含量，回收率在９５％以上，结果令人满意。     

3—对甲苯基—5—（4‘—硝基—2’—羧基苯偶氮）—2—硫代—4—噻唑啉酮的合成…

本报道了新荧光试剂３－对甲苯基－５－（４’－硝基－２’－羧基苯偶氮）－２－硫代－４－噻唑啉酮（ＭＰＮＣＰＡＴＴＮ）的合成，通过元素分析、红外光谱，核磁共振氢谱和质谱确证了其结构。在ＰＨ５．６时，它与铜（Ⅱ）形成稳定的荧光络合物，在λｅｘ／λｅｍ＝３０８ｎｍ／４０３ｎｍ处产生强烈荧光，其荧光强度与铜（Ⅱ）的浓度在６．２８×１０＾－９－９．４４×１０＾－７ｍｏｌ／Ｌ范围内呈线性关系，检测限为０．３９     

六氟磷酸二（4,4‘—二甲基—2,2’—联吡啶）.（2,2‘—联吡啶—4,4’—二羧？…

用＾１Ｈ ＮＭＲ和＾１３Ｃ ＮＭＲ谱研究了新型电化学发光探针六氟磷酸二（４,４’;－二甲基－２,２‘－联吡啶）．（４．４’－二羧酸－２,２‘－联吡啶）合钌的立体结构,通过＾１Ｈ ＾１Ｈ ＣＯＳＹ,＾１３Ｃ－＾１Ｈ ＨＥＴＣＯＲ谱对其氢谱和碳谱中的各谱峰进行了归属,并给出了氢谱和碳谱峰的化学位移值。     

Syntheses and Crystal Structures of 4,4‘—Diformyl—diphenoxyethane and 4,4’,4‘’—Triformyl—triphenoxytriethylamine

Two title compounds, 4,4'-diformyl-diphenoxyethane (compound 1, C16H14O4)and 4,4',4'-triformyl-triphenoxytriethylamine (compound 2, C27H27NO6), were synthesized by condensation of 4-hydroxybenzaldehyde with 1,2-dichloroethane and tris2-chloroethylamine, respectively in dimethyl formamide in the presence of anhydrous potassium carbonate. The crystal data are: monoclinic, P21/c, a = 7.571(2), b = 12.608(3), c = 7.357(2) ', = 105.823(6)o, V = 675.7(2)'3, Mr = 270.3, Z = 2, Dc = 1.328 g/cm3, F(000) = 284, (MoK = 0.096 mm-1, R = 0.0537 and wR = 0.2189 for compound 1; and monoclinic, P21/n, a = 11.7162(6), b = 9.0042(6), c = 22.908(2) ', = 99.505(1)°, V = 2383.5(3) '3, Mr = 461.50, Z = 4, Dc = 1.286 g/cm3, F(000)= 976, (MoK = 0.091 mm-1, R = 0.0464 and wR = 0.1462 for compound 2. The molecule of compound 1 dialdehyde is located at the crystallographic inversion center nearby the midpoint of C8-C8A single bond. The three chains in the molecule of compound 2 trialdehyde are of non-crystallographic pseudo-C3 symmetry, and each of them is quite planar.