نتایج جستجو برای: norbornene
تعداد نتایج: 529 فیلتر نتایج به سال:
Three-component couplings were achieved from common aryl halides, alkyl halides, and heteroarenes under palladium and norbornene co-catalysis. The reaction forges hindered aryl-heteroaryl bonds and introduces ortho-alkyl groups to aryl rings. Various heterocycles such as oxazoles, thiazoles and thiophenes underwent efficient coupling. The heteroarenes were deprotonated in situ by bases without ...
In the title compound, C(17)H(11)Cl(6)NO(2), the six-membered ring of the norbornene moiety adopts a boat conformation whereas the two five-membered rings adopt envelope conformations. The phenyl ring and the ring of the succinimide moiety are almost coplanar [dihedral angle = 7.44 (14)°]. The crystal packing is stabilized by a weak inter-molecular C-H⋯O hydrogen bond.
The synthesis of polynorbornene by ring opening metathesis polymerization (ROMP) in the presence of 1 2 generation Grubbs catalyst-functionalized nanotubes, is reported. A characterization of the 2 generation Grubbs catalystfunctionalized nanotubes was performed by TGA (Thermogravimetric Analysis) on-line connected with a quadrupole-mass spectrometer, in order to quantify the amount of catalyst...
From 2-aminonorbornene hydroxamic acids, a simple and efficient method for the preparation of pyrrolo[1,2-a]pyrimidine enantiomers is reported. The synthesis is based on domino ring-closure followed by microwave-induced retro Diels-Alder (RDA) protocols, where the chirality of the desired products is transferred from norbornene derivatives. The stereochemistry of the synthesized compounds was p...
A series of iron oxide doped norbornene (NOR)/deuterated norbornene dicarboxylic acid (NORCOOH) diblock copolymers were synthesized and characterized by X-ray photoelectron spectroscopy (XPS), small angle neutron scattering (SANS) and superconducting quantum interference device (SQUID) experiments. g-Fe2O3 nanoparticles were synthesized within the microdomains of diblock copolymers with volume ...
Представлены результаты исследований в области изучения биологически активных свойств производных норборненового ряда. Показано, что многие из норборнен содержащих входят состав лекарственных препаратов, петидов и полипептидов, коферментов, витаминов других соединений. Сообщается, соединения норборенового ряда обладают антимикробными, антифунгальными, антитромбоцитными, противоопухолевыми целым...
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