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[(2,3,5,6-η)-Bicyclo[2.2.1]hepta-2,5-diene]dibromidopalladium(II)  [cached]
Nam-Ho Kim,Kwang Ha
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809020583
Abstract: In the title complex, [PdBr2(C7H8)], the PdII ion lies in a distorted square-planar environment defined by the two Br atoms and the mid-points of the two π-coordinated double bonds of bicyclo[2.2.1]hepta-2,5-diene. The complex is disposed about a crystallographic mirror plane parallel to the ac plane passing through the Pd, Br atoms and the centre of the diene ligand.
Swern Oxidation of Bicyclo[2.2.1]hept-5-ene-2,3-diol and Its Pyrazine-fused Derivatives: An Improved Synthesis of Bicyclo[2.2.1]hept-5-ene-2,3-dione and An Unexpected Ring-Opening Reaction  [PDF]
Tomoshige Kobayashi,Sayuri Kobayashi
Molecules , 2000, DOI: 10.3390/50901062
Abstract: An improved synthesis of bicyclo[2.2.1]hept-5-ene-2,3-dione by Swern oxidation of bicyclo[2.2.1]hept-5-ene-2,3-diol, and an unexpected ring-opening reaction by the Swern oxidation of pyrazine-fused congeners are described.
(1R,4R,7S)-1,7-Dimethyl-7-(phenylsulfonylmethyl)spiro[bicyclo[2.2.1]heptane-2,2′-1,3-dioxolane]  [cached]
Ya-Wen Wang,Yu Peng
Acta Crystallographica Section E , 2008, DOI: 10.1107/s1600536807058084
Abstract: In the title compound, C18H24O4S, the chiral bicyclo[2.2.1]heptane group is not symmetrical due to the influence of the substituents. The angle between the three-atom bridge plane and the four-atom planes of the boat-shaped six-membered ring are 55.07 (19) and 56.24 (19)°. The bridgehead angle is 92.75 (17)°.
1H and 13C NMR spectroscopic studies of half-esters from monohydrolysis of dialkyl bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylates  [PDF]
Yoshikazu Hiraga,Satomi Niwayama
Spectroscopy: An International Journal , 2004, DOI: 10.1155/2004/451925
Abstract: The structures of the half-esters from the monohydrolysis of (exo,exo)-, (endo,endo)-, and (endo,exo)-dialkyl bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylates were determined by 1H and 13C NMR as well as 2D NMR spectra, and the complete spectral assignment has been made. After conversion of one of the carboalkoxy groups to a carboxyl group, different tendencies were observed for the differences in 1H and 13C NMR chemical shifts between half-esters and the corresponding diesters.

Wang Dong,Huang Zhi-tang,

高分子学报 , 1981,
Abstract: 以核磁共振波谱和溴加成法分析N-苯基-双环2.2.1]庚-5-烯-2,3-二甲酰亚胺的聚合物的化学结构。聚合物分子具有含内、外式双环2.2.1]庚-5-烯双键和环戊烯双键的结构单元。半定量地测定了各类双键的含量。分子的饱和链段有5,7-位相连的外式构型和5,6-位相连的内式构型的双环2.2.1]庚烷的结构单元。结果表明,聚合过程中有构型的转变,重排反应,以及不同的链增长途径。
A Direct Route to 6,6’-Disubstituted-2,2’-Bipyridines by Double Diels-Alder/retro Diels-Alder Reaction of 5,5’-bi-1,2,4-Triazines  [PDF]
D. Branowska
Molecules , 2005, DOI: 10.3390/10010274
Abstract: Inverse electron demand Diels-Alder reaction of functionalized 5,5’-bi-1,2,4- triazines with bicyclo[2.2.1]hepta-2,5-diene in boiling p-cymene leads to a range of 6,6’- disubstituted-2,2’-bipyridines in good yield.

ZHU Wen-jiang,ZHANG Chong-li,HUANG Zhi-tang,

高分子学报 , 1986,
Abstract: 以乙醇作溶剂,双环2.2.1]庚-5-烯-2,3-二羧酸单乙酯、1,2,4-偏苯三羧酸-2-(或-1-)乙酯和4,4’-二氮基二苯甲烷为原料,合成了“PMR”型(Polymerization of Monomer Reactants)聚酰胺-酰亚胺树脂。用它制成的复合材料能在260℃长期使用。利用模型化合物对聚酰胺-酰亚胺形成的机理进行了研究。

Wang Dong,Wu Yao-man,Li Jia-ze,Zhang Chong-li,Yu Shang-ying,Jin Jian-rong,Huang Zhi-tang,

高分子学报 , 1980,
Abstract: 合成了以乙醇为溶剂,双环2.2.1]庚-5-烯-2,3-二羧酸乙酯、二苯甲酮四酸二乙酯和4,4’-二胺基二苯甲烷为单体的“PMR型”聚酰亚胺树脂。此树脂适用于制备复合材料。300℃恒温热老化实验表明,与玻璃布复合的增强塑料可在 250℃—300℃ 下长期使用。实验证明树脂溶液是单体的酯铵盐溶液,解决了树脂溶液分层的问题。初步研究了酰胺化、酰亚胺化和交联反应的历程。
Penta-Hepta Defect Motion in Hexagonal Patterns  [PDF]
Lev S. Tsimring
Physics , 1995, DOI: 10.1103/PhysRevLett.74.4201
Abstract: Structure and dynamics of penta-hepta defects in hexagonal patterns is studied in the framework of coupled amplitude equations for underlying plane waves. Analytical solution for phase field of moving PHD is found in the far field, which generalizes the static solution due to Pismen and Nepomnyashchy (1993). The mobility tensor of PHD is calculated using combined analytical and numerical approach. The results for the velocity of PHD climbing in slightly non-optimal hexagonal patterns are compared with numerical simulations of amplitude equations. Interaction of penta-hepta defects in optimal hexagonal patterns is also considered.
2-Ethyl-8-methoxymethyl-4-oxo-4H-chromen-7-yl (1S,4R)-4,7,7-trimethyl-3-oxo-2-oxabicyclo[2.2.1]heptane-1-carboxylate  [cached]
Ya Qiu,Ying Chen,Peng Xia
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810018921
Abstract: The title compound C23H26O7, was prepared by esterification of 2-ethyl-7-hydroxy-8-methoxymethyl-4H-chromen-4-one with (S)-( )-camphanic chloride. The two rings of the chromone system are coplanar, making a dihedral angle of 1.99 (19)°, and the camphanoyl unit substituted at 7-O retains the original bicyclo[2.2.1]heptane conformation of the starting reagent.
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