95-12-5, Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 95-12-5, name is Bicyclo[2.2.1]hept-5-en-2-ylmethanol. This compound has unique chemical properties. The synthetic route is as follows.
EXAMPLE 2; Synthesis of Norbornene Monomers Containing Olefin Side Chain (NBMOAC); The procedure for synthesizing norbornene monomers containing olefin side chain was as following scheme: Norbornene methylene alcohol (11.2 g, 0.1 mol) and little hydroquinone were dissolved in 20 ml of tetrahydrofuran in a two-mouth bottle. The mixture of methylacrylethoxy isocyanate (15.0 g, 0.1 mol excess) and tetrahydrofuran (15 ml) were dropwise added into the solution with a funnel at rate of 1 drop/sec. The mixture was heated to reflux with stirring at 50 C. for 6 h. Small amount of methanol was then added to react with rest methylacrylethoxy isocyanate and the solution became transparent. Solvent was then removed by rotational evaporation to give pale white liquid. A white solid formed from said pale white liquid after a period of time without any disturbance.After comparison of practical atom analysis and theoretical distribution we found that the theoretical distribution of monomer norbornene containing olefin end (C15H21O4N) was C=64.52%, H=7.52%, N=5.02%; while the practical analysis was C=64.07%, H=7.50%, N=4.98%.The NMR spectrum of monomer norbornene containing olefin end was as following: 1H NMR(CDCl3): delta (ppm)=0.44-0.46(Hn3n), 1.06-1.08(Hx3x), 1.14-1.16(Hn7a), 1.22-1.24(H3), 1.33-1.35(Hn7s), 1.59(Hx2n), 1.70-1.74(Hn3x), 1.83-1.89(H10), 2.27(Hn2x), 2.60(Hx4), 2.70-2.71(Hn4, Hx1), 2.76(Hn1), 3.39-3.40(Hn8), 3.51-3.55(H12), 3.73-3.77(H13), 4.11-4.15(Hx8), 5.50, 5.85(H11, CC), 5.98(Hn6), 6.01(Hx6,Hx5), 6.04(Hn5). 13C NMR(CDCl3): delta (ppm)=18.53(C10), 29.20(Cn3), 29.78(Cx3), 38.46(Cx2), 39.59(Cn2), 40.39(C12), 41.88(C13), 42.50(Cx1,Cn4), 43.90, 44.16(Cx4, Cn1), 45.25(Cx7), 49.66(Cn7), 64.01(Cn8), 68.69(Cx8), 126.20(C11), 132.50(Cn6), 136.46-136.51(Cx5,Cx6), 137.21(Cn5) 137.77(C14), 157.09(C15), 167.57(C16).IR analysis for monomer norbornene with olefin end was as following:3360(upsilonN-H), 3050(upsilonC-H), 2960(upsilonC-H), 1715(upsilonCO), 1640(upsilonCC), 1540(upsilonC-H), 1300(upsilonC-O).
While traditionally a conservative industry, chemical producers will need to modernize their PR strategies to stay relevant.we look forward to future research findings about 95-12-5, Bicyclo[2.2.1]hept-5-en-2-ylmethanol.
Reference:
Patent; National Taiwan University of Science & Technology; US7132565; (2006); B2;,
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