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…     

2—羟基2‘烷氧基—1,1’—联萘化合物的^1HMNR研究

研究了２－羟基－２＇－异丙氧基－１，１－联萘（３）等联萘化合物＾１Ｈ ＮＭＲ谱或ＣＯＳＹ谱，此类化合物因２及２＇位取代基不同，两个萘环上同位质子不再等价，萘环质子峰增至１２组。化合物３＾１ＨＮＭＲ谱峰的归属表明，萘环环电流各向异性对另一萘环质子的屏蔽作用与作者早期研究结果一致。２（或２＇）位取代基上的质子的化学位移也与另一萘环平面相对位置有关。     

1,9—乙撑基蒽和1,9—乙撑基—10—甲基蒽的单电子氧化

报道了１，９－乙撑基蒽和１，９－乙撑基－１０－甲基蒽在ＣＨＣｌ３／定点 与碘反应的机理，它们的单电子氧化生成游离基正离子，该过程存在侧链去质子和吡啶进攻蒽环两种竞争反应，蒽环上引入乙撑基使侧链氧化远比环氧化占优势，乙撑基比甲基容易去质子。     

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.     

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。     

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。     

4—叠氮—4—脱氧—4‘—去甲基表鬼臼毒素的^1H和^13C核磁共振分析

用＾１Ｈ－＾１ＨＣＯＳＹ，ＨＭＱＣ和ＲＯＥＳＹ二维核磁共振等技术对标题化合物的氢谱和碳谱进行了完全归属。     

6,6‘—二（二苯基氧化膦甲基）—1,1’—氮氧化—2,2‘—联吡啶与…

合成了硝酸铒与四功能团含磷萃取剂６，６’－二（二苯基氧化膦甲基）－１，１’氮氧化－２，２’－联吡啶的配合物。用四圆衍射仪测定了配合物的晶体结构。金属离子周转的配位水分子已全部被取代。     

‘Verification’ versus ‘validation’: a terminological comparison

The present diversity in the definitions and relations of ‘verification’ and ‘validation’ is impractical for such transdisciplinary concepts. General dictionaries, international special language vocabularies and minor lists show that the respective recent formulations by the International Organization for Standardization (ISO) and the Joint Committee for Guides in Metrology (JCGM) are the most quoted. The characteristics of these concepts are elucidated terminologically, and separate concept systems are made for ISO and JCGM to arrive at a preference for a generic rather than an associative relation.