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Norbornadiene
About: Norbornadiene is a research topic. Over the lifetime, 2389 publications have been published within this topic receiving 38603 citations.
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Patent•
07 Aug 1984
TL;DR: In this paper, the authors presented a method to obtain the titled substance useful as a drug in high yield by reacting easily obtainable 2,2,2-trifluoroacetohydroxymoyl bromide with an unsaturated hydrocarbon such as substituted ethylene derivative, norbornene or norbornadiene, etc in the presence of a tertiary amine.
Abstract: PURPOSE:To obtain the titled substance useful as a drug in high yield, by reacting easily obtainable 2,2,2-trifluoroacetohydroxymoyl bromide with an unsaturated hydrocarbon such as substituted ethylene derivative, norbornadiene, etc in the presence of a tertiary amine CONSTITUTION:1mol 2,2,2-trifluoroacetohydroxynoyl bromide as a raw material is reacted with preferably 1-10mol unsaturated hydrocarbon such as substituted ethylene derivative shown by the formula I (R1, R2, R3, and R4 are H, lower alkyl, lower alkenyl, lower alkoxy, etc) or a substituted acetylene derivative shown by the formula II (R5 and R6 are H, phenyl, lower alkoxycarbonyl, etc), or norbornene or norbornadiene in the presence of a tertiary amine preferably at -10-50 degC, to give a compound shown by the formula III or formula IV The raw material compound is synthesized from trifluoroacetic acid
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TL;DR: In this paper, copolymerization of diethyl 7-oxabicyclo[2.2.1]hepta-2,5-diene-2-3-dicarboxylate (DOHDD) with phenylacetylene (PA) or p-methoxyphenyl acetylene (MeOPA) was successfully performed in chloroform using PdBr2 as catalyst.
Abstract: Copolymerizations of diethyl 7-oxabicyclo[2.2.1]hepta-2,5-diene-2,3-dicarboxylate (DOHDD) with phenylacetylene (PA) or p-methoxyphenylacetylene (MeOPA) were successfully performed in chloroform using PdBr2 as catalyst. The products of reactivity ratios r1 · r2 for poly(DOHDD-co-PA) and poly(DOHDD-co-MeOPA) are 0.026 and 0.0077, respectively. These values suggest a maximum degree of alternating sequences of 86 and 92% in the two systems, hence a high alternating tendency. It is interesting to note that the present copolymerizations occur by combination of different types of monomer, alkene and alkyne.
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TL;DR: Ru-catalyzed cycloadditions between norbornadiene and alkynyl halides were found to occur in moderate to good yields (32−89%).
Abstract: Ru-catalyzed [2 + 2] cycloadditions between norbornadiene and alkynyl halides were found to occur in moderate to good yields (32−89%). The presence of the halide moiety greatly enhances the reactiv...
1 citations
TL;DR: In this paper, a kinetic study of norbornadiene photoisomerization sensitized with acetophenone, using ethanol as solvent, was performed at 25°C and at high reaction conversion yield, quadricyclane being detected as the only reaction product.
Abstract: One of the best systems for photochemical storage of solar energy is the interconversion between norbornadiene and quadricyclane. This paper presents a kinetic study of norbornadiene photoisomerization sensitized with acetophenone, using ethanol as solvent. This photoreaction was carried out at 25°C and at high reaction conversion yield, quadricyclane being detected as the only reaction product. As a result of that, the global isomerization quantum yield is a norbornadiene and quadricyclane concentration function. In the same way, the influences of temperature and solvent on the photoisomerization kinetics have been studied.
1 citations