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Published in Allan F. M. Barton, and Solubility Parameters, 2018
Richards and Disselhoff885 determined second virial coefficients for poly(benzyl methacrylate) (Mn = 6 x 104Mw = 1.7 × 105) in cyclopentanol (Table 19). The interpolated value for the theta temperature (χ = 0.50) was 83.5°C. With an assumed jδ of 23.7 MPa1/2, the polymer Hildebrand parameter was 15.3 MPa1/2, but this figure is probably less reliable than the values quoted above. Previously, Richards883 had studied a series of poly (benzyl methacrylate) fractions. Phase separation studies showed a theta temperature of 73.2°C in cyclopentanol; and χH = 422.55/(T/K), corresponding to χH = 1.42 at 25°C. With iδ = 23.7 MPa1/2, jδ = 17.2 MPa1/2.
Reduction Reactions
Published in Michael B. Smith, A Q&A Approach to Organic Chemistry, 2020
The product is cyclopentanol. Why is aqueous NH4Cl used for hydrolysis with NaBH4 but water is used with LiAlH4?
Selective aqueous-phase hydrogenation of furfural to cyclopentanol over Ni-based CNT catalysts
Published in Environmental Technology, 2023
Haihong Xia, Jing Li, Jun Zhao, Minghao Zhou, Jianchun Jiang
With the development of a novel catalysis process for the production of value-added bio-fuels and chemicals utilizing renewable materials instead of the consumption of fossil resources [1–4]. Tremendous efforts have been devoted to prepare bio-oils produced from fast pyrolysis of biomass, which was regarded as a promising bio-fuel [5–7]. However, biomass-derived materials contained abundant oxygenated compounds, including ether compounds, carboxylic acids, aldehydes, phenols [8–12] and so on, which resulted in a great challenge to transform bio-oils to high-value fuels. Furfural (FFR) was a typical chemical with numerous oxygenates and was particularly undesirable as fuel components. Through catalytic hydrogenation process, FFR could be converted to furfuryl alcohol (FFA) [13], tetrahydrofurfuryl alcohol (THFA) [14], 2-methylfuran (2-MF) [15], 2-methyltetrahydrofuran (2-MTHF) [16], cyclopentanone (CPO) [17] and cyclopentanol (CPL) [18], which exhibited wide industrial application.