6 results about "Norbornadiene" patented technology

The application provides a synthesis method of 1-substituted phenanthrene compounds, which comprises the following steps: mixing ortho-substituted aryl diazonium salt with KI, adding a palladium acetate catalyst, adding norbornadiene, adding a base, adding an organic phosphine ligand, adding 2-halobenzoic acid, heating to 80-150 DEG C in an aprotic solvent under a nitrogen atmosphere, and reacting for 2-10 hours to obtain the 1-substituted phenanthrene compounds. The method uses cheap and easily obtained ortho-substituted aryl diazonium salt instead of expensive aryl iodide to prepare 1-substituted phenanthrene compounds, and has the characteristics of easy raw material, mild conditions and simple operation, and is a simple synthesis method of 1-substituted phenanthrene compounds.

The application provides a system and method for photocatalytic production of tetrahydrocycloheptane based on reactive distillation, and relates to the technical field of catalytic chemistry. The system comprises a backpack reactive distillation device, a solvent recovery and product purification column, and multiple heat exchangers. The backpack reactive distillation device comprises a distillation column and N photo reactors connected with the distillation column. The raw material norbornadiene, the side sampling stream of the distillation column, and the circulating stream taken from the bottom of the solvent recovery and product purification column are respectively introduced into each photo reactor from three paths. The reflux stream of the distillation column and the outlet streams of the N photo reactors are introduced into the distillation column. The crude product taken from the bottom of the distillation column is introduced into the solvent recovery and product purification column, the solvent recovery and product purification column separates and purifies tetrahydrocycloheptane and recovers the solvent, and high-efficiency and high-purity preparation of tetrahydrocycloheptane is realized.

The application relates to the technical field of high polymer materials, in particular to a hydrogenated cycloolefin polymer with high adhesion and high elongation and a preparation method thereof. The method comprises the following steps: performing a ROMP polymerization reaction on norbornadiene and a second cycloolefin in the presence of a solvent, a polymerization catalyst and a molecular weight regulator, obtaining a cycloolefin polymer solution after quenching; adding an oxidizing agent into the cycloolefin polymer solution to perform an opening ring oxidation reaction, and obtaining an intermediate after post-treatment; performing a hydrogenation reaction on the intermediate and hydrogen in the presence of a hydrogenation catalyst to obtain the hydrogenated cycloolefin polymer. The hydrogenated cycloolefin polymer provided by the application has higher elongation than conventional cycloolefin polymers, and has higher adhesion to glass and metal substrates.

The invention provides an electrochromic device, an electrochromic material, a compound and a preparation method thereof. The electrochromic compound is formed by coupling norbornadiene and a pyridine compound, and the structure of the electrochromic compound is as follows: in the formula, R1, R2, R3 and R4 are the same or different alkyl groups; r5 and R6 are the same or different functional groups; x is any anion of halogen, F <->, Cl <->, Br <->, I <->, BF4 <->, CF3SO3 <-> and (CF3SO2) 2N <->; according to the electrochromic compound provided by the embodiment of the invention, the norbornene is adopted as a connecting bridge between the pyridine and the pyridine, and the structure of the norbornene is a three-dimensional double-ring structure, so that the phenomenon that pi-pi stacking is easy to occur in electrochemical circulation due to mutual attraction between large pi bonds of a benzene ring can be avoided; and the problem that the color-changing depth is reduced or the color becomes light due to aggregation (or deposition) of the color-changed pyridine compound in the electrolyte is solved.

This invention provides a palladium-catalyzed method for the decarbonylation and cyclization of o-halobenzoic esters to synthesize 1-substituted phenanthrene compounds. The method involves the decarbonylation and cyclization of o-substituted iodobenzene, norbornadiene, and o-halobenzoic esters in an aprotic solvent under palladium catalysis to yield 1-substituted phenanthrene compounds. This method uses o-halobenzoic esters as cyclizing agents, which not only expands the applicability of cyclizing agents but also offers advantages such as milder reaction conditions, no need for inert gas protection (e.g., nitrogen), and no use of organophosphorus ligands. It is an economical and convenient method for preparing 1-substituted phenanthrene compounds.

The invention relates to the technical field of synthesis of phenanthrene compounds, in particular to a synthesis method of a polysubstituted phenanthrene compound. Comprising the following steps: sequentially adding a catalyst, a ligand, alkali, a reactant I, a reactant II, an N, N-dimethylacetamide solution and a number 5 magneton into a reactor, replacing by N2, connecting a condensing pipe, introducing condensed water from bottom to top, placing the reactor into an oil bath pan at 80-120 DEG C, heating, stirring and reacting for 8-24 hours, terminating the reaction, and purifying the product to obtain a phenanthrene compound product; the reactant I is selected from one of 2-bromoacetophenone, 2-bromo-5-methyl acetophenone, 2-bromo-5-methoxy acetophenone, 2-bromo-5-ethyl acetophenone or 2-bromo-5-phenyl acetophenone, and the reactant II is selected from one of 2-bromoacetophenone, 2-bromo-5-methyl acetophenone, 2-bromo-5-methoxy acetophenone, 2-bromo-5-ethyl acetophenone and 2-bromo-5-phenyl acetophenone; the reactant II is norbornadiene; the method is mild in reaction condition, high in selectivity, relatively high in yield and environment-friendly; the active product can be used in the field of synthesis of drugs, pesticides and paint dyes.