2. Fluka nitromethane ( ^ 99.7 mole % ) and the following Fluka hydrocarbons: trans-2-pentene ( ~ 9 9 m o l e % ) , cis-2-hexene ( ^ 9 9 . 5 ) , trans-2hexene ( ~ 99), trans-3-hexene 99), trans-2heptene 99), trans-3-heptene 99), 1-octene (99.73), trans-2-octene ( ^ 99), trans-3-octene ( ^ 9 9 ) , trans-4-octene ( ^ 99), 1-nonene ( > 97), trans-2nonene ( ^ 99), trans-3-nonene ( ^ 99), trans-4-no...

bis(indenyl)zirconium dichloride as a catalyst was synthesized using a modified method at the room temperature. polymerization of ethylene and copolymerization of ethylene and propylene were carried out by this metallocene catalyst. ethylene propylene (p/e) feed ratios of 0.25, 0.5, 1, and 2 were employed into the copolymerization systems. copolymerization conditions like cocatalyst/catalyst ra...

A series of N-acetyl-O-(ω-alkenyl)-L-tyrosine ethyl esters were synthesized by the reaction of vinyl bromides (4-bromo-1-butene, 6-bromo-1-hexene, 8-bromo-1-octene and 10-bromo-1-decene) with N-acetyl-L-tyrosine ethyl ester. 1H NMR, elemental analysis, FT-IR, and mass spectra were performed for these N-acetyl-O-(ω-alkenyl)-L-tyrosine ethyl esters. The novel titanium complex can catalyze the cop...

Although the title mol-ecule, C(20)H(16)N(2)O(10), does not possess mol-ecular inversion symmetry, it lies on a crystallographic inversion centre which imposes disorder on the central cyclo-hexene ring. In addition, the cyclo-hexene ring has non-symmetry-related disorder over two sites, with the ratio of the major and minor components being 0.54:0.46. The overall effect is to produce four disor...

The cyclo-hexene ring in the title compound, C(15)H(18)INO(2), adopts a sofa conformation. The dihedral angle between the cyclo-hexene (through all ring atoms) and benzene rings is 63.3 (1)°. The mol-ecular conformation features an N-H⋯I short contact and the crystal packing features C-H⋯O hydrogen bonds.

The title compound, C(12)H(12)Cl(2)O(2), has a bicyclic skeleton containing cyclo-hexene and benzene fragments. The cyclo-hexene ring adopts a half-chair conformation with displacements of two atoms out of the least-squares plane of 0.311 (2) and -0.336 (2) Å. The Cl atoms are trans-positioned.

SiO2-supported silyl chromate catalyst is an important industrial catalyst for production of high grade HDPE pipe materials. The control of the short chain branch (SCB) distribution using this catalyst system is still a great challenge. In this work, ethylene and 1-hexene copolymers were synthesized using SiO2-supported silyl chromate catalyst combined with triisobutylaluminium (TIBA), triethyl...

Muhammad Adnan Akram, Xiaoyu Liu, Baiyu Jiang, Biao Zhang, Amjad Ali, Zhisheng Fu & Zhiqiang Fan*MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department Polymer Science Engineering, Zhejiang University, Hangzhou, China