307 research outputs found
The synthesis of monodisperse alkanes with long chains
No full textThis thesis discusses reasons for the interest in monodisperse long chain alkanes and describes attempts, past and present, to synthesise such molecules. Chapter 1 discusses why the synthesis of such molecules are important and the objectives of this project. Chapter 2 reviews the methods previous groups have devised to prepare pure samples of long chain alkanes. In particular, work carried out by Whiting et al. at Bristol, whose scheme formed the basis of the early work in Durham. Chapter 3 describes the work in Durham and improvements which were made to Whiting's method, allowing the synthesis of longer chain lengths and greater quantities of materials to be achieved. Chapter 4 provides a summary of the practical work carried out by the author. Chapter 5 gives experimental details of the work described in Chapter 4
Photolysis and thermolysis of 3-normal-butyl-3-phenyldiazirine
No full textPT: J; CR: BRADLEY GF, 1977, J CHEM SOC P2, P1214 FREY HM, 1966, ADV PHOTOCHEM, V4, P225 LIU MTH, 1973, CAN J CHEM, V51, P2393 LIU MTH, 1977, CAN J CHEM, V55, P3596 LIU MTH, 1979, CAN J CHEM, V57, P1299 SMITH NP, 1979, J CHEM SOC P2, P213 SMITH RAG, 1975, J CHEM SOC P2, P686; NR: 7; TC: 9; J9: J CHEM SOC PERKIN TRANS 2; PG: 5; GA: KZ442Source type: Electronic(1
Not quite the last word on the Perkin reaction
No full textMicrowave irradiation does not accelerate the rate of the Perkin reaction carried out under normal atmosphericpressure. Water is an essential yet catalytic reactant for the Perkin reaction to occur. Containment of the Perkin reaction in a sealed vessel improves the yield. Two pressure increases are observed during a 4 h reaction time. An induction period is seen in the Perkin reaction when sodium acetate is used as a base. A re-appraisal of the reaction mechanism is proposed on the basis of these observations. The use of PFA reaction vessels enables the Perkin reaction to occur under aqueousconditions for around 80 reactions/vessel
Phylogeography and evolutionary lineage diversity in the small-eared greater galago, Otolemur garnettii (Primates: Galagidae)
No full textPenna, Anna, Dillon, Rosemarie, Bearder, Simon K, Karlsson, Johan, Perkin, Andrew, Pozzi, Luca (2023): Phylogeography and evolutionary lineage diversity in the small-eared greater galago, Otolemur garnettii (Primates: Galagidae). Zoological Journal of the Linnean Society 198 (1): 131-148, DOI: 10.1093/zoolinnean/zlac079, URL: https://academic.oup.com/zoolinnean/article/198/1/131/679374
Formation of indolizines by the addition of α-chloroacrylonitrile to pyridinium ylides: regioselectivity and Hammett correlation
No full textPT: J; CR: BENSASSON R, 1971, T FARADAY SOC, V67, P1904 BONNEAU R, 1989, J CHEM SOC CHEM COMM, P510 CARMICHAEL I, 1986, J PHYS CHEM REF DATA, V15, P1 GRAHAM WH, 1965, J AM CHEM SOC, V87, P4396 LIU MTH, 1987, CHEM DIAZIRINES, CH5 LIU MTH, 1987, TETRAHEDRON LETT, P1011 PUGMIRE RJ, 1971, J AM CHEM SOC, V98, P1887 SOUNDARAJAN N, 1988, TETRAHEDRON LETT, P3419 TURRO NJ, 1980, J AM CHEM SOC, V102, P7578 UCHIDA T, 1976, SYNTHESIS-STUTTGART, P209; NR: 10; TC: 10; J9: J CHEM SOC PERKIN TRANS 1; PG: 2; GA: AL500Source type: Electronic(1
Not quite the last word on the Perkin reaction
No full textMicrowave irradiation does not accelerate the rate of the Perkin reaction carried out under normal atmospheric pressure. Water is an essential yet catalytic reactant for the Perkin reaction to occur. Containment of the Perkin reaction in a sealed vessel improves the yield. Two pressure increases are observed during a 4 h reaction time. An induction period is seen in the Perkin reaction when sodium acetate is used as a base. A re-appraisal of the reaction mechanism is proposed on the basis of these observations. The use of PFA® reaction vessels enables the Perkin reaction to occur under aqueous conditions for around 80 reactions/vessel
Figure 3. Phylogenetic tree estimated using BEAST from dataset 1 in Phylogeography and evolutionary lineage diversity in the small-eared greater galago, Otolemur garnettii (Primates: Galagidae)
No full textFigure 3. Phylogenetic tree estimated using BEAST from dataset 1 (cytochrome b) and node-calibrated using the fossil record.Published as part of Penna, Anna, Dillon, Rosemarie, Bearder, Simon K, Karlsson, Johan, Perkin, Andrew & Pozzi, Luca, 2023, Phylogeography and evolutionary lineage diversity in the small-eared greater galago, Otolemur garnettii (Primates: Galagidae), pp. 131-148 in Zoological Journal of the Linnean Society 198 (1) on page 139, DOI: 10.1093/zoolinnean/zlac079, http://zenodo.org/record/792459
Effect of diazirine concentration on the reaction of 3-benzyl-3-chlorodiazirine with methanol
No full textPT: J; CR: GRAHAM WH, 1965, J AM CHEM SOC, V87, P4396 GRILLER D, 1982, J AM CHEM SOC, V104, P5549 LIU MTH, 1984, J CHEM SOC CHEM COMM, P1062 LIU MTH, 1985, J CHEM SOC CHEM COMM, P982 LIU MTH, 1985, J ORG CHEM, V50, P3218 LIU MTH, 1985, TETRAHEDRON LETT, V26, P3071 LIU MTH, 1986, J CHEM SOC PERK T 2, P1233 LIU MTH, 1986, J PHYS CHEM-US, V90, P75 LIU MTH, 1987, CHEM DIAZIRINES, V1, CH5 TOMIOKA H, 1984, J AM CHEM SOC, V106, P454 TOMIOKA H, 1986, J CHEM SOC CHEM COMM, P1364; NR: 11; TC: 5; J9: J CHEM SOC PERKIN TRANS 2; PG: 3; GA: L7207Source type: Electronic(1
Substituent and temperature effects on the reactions of benzylchlorocarbene with alcohol
No full textPT: J; CR: DOLBY LJ, 1966, J ORG CHEM, V31, P110 FRENKING G, 1984, TETRAHEDRON, V40, P2123 GRAHAM WH, 1965, J AM CHEM SOC, V87, P4396 GRILLER D, UNPUB GRILLER D, 1982, J AM CHEM SOC, V104, P5549 GRILLER D, 1984, J AM CHEM SOC, V106, P198 KIRMSE W, 1971, CARBENE CHEM KIRMSE W, 1981, J AM CHEM SOC, V103, P5935 LIU MTH, 1984, J CHEM SOC CHEM COMM, P1062 LIU MTH, 1985, J CHEM SOC CHEM COMM, P982 MARCH J, 1985, ADV ORG CHEM, P244 MOSS RA, 1975, CARBENES, V1 MOSS RA, 1975, CARBENES, V2 MOSS RA, 1983, TETRAHEDRON LETT, V24, P685 MUROV SL, 1973, HDB PHOTOCHEMISTRY, P147 PLATZ MS, 1982, J AM CHEM SOC, V104, P6494 SCHLOSSER M, 1967, CHEM BER, V100, P3901 SCHMID GH, 1978, J ORG CHEM, V43, P777 SENTHILNATHAN VP, 1980, J AM CHEM SOC, V102, P7637 TANAKA R, 1971, TETRAHEDRON, V27, P2651 TOMIOKA H, 1983, J AM CHEM SOC, V105, P5053 TOMIOKA H, 1984, J AM CHEM SOC, V106, P454 TOMIOKA H, 1984, J CHEM SOC CHEM COMM, P476 TOMIOKA H, 1984, TETRAHEDRON LETT, V25, P4413 WARNER P, 1984, J ORG CHEM, V49, P3666 WARNER PM, 1984, J AM CHEM SOC, V106, P5366 WRIGHT BB, 1984, J AM CHEM SOC, V106, P4175; NR: 27; TC: 9; J9: J CHEM SOC PERKIN TRANS 2; PG: 8; GA: D7012Source type: Electronic(1
on the thermal decomposition of diazirines
No full textPT: J; CR: BIGOT B, 1978, J AM CHEM SOC, V100, P6576 BRADLEY GF, 1977, J CHEM SOC P2, P1214 BRUNNER J, 1980, J BIOL CHEM, V255, P3313 DIDERICH G, 1972, HELV CHIM ACTA, V55, P2103 FLEMING I, 1980, FRONTIER ORBITALS OR GRILLER D, 1982, J AM CHEM SOC, V104, P5549 JENNINGS BM, 1976, J AM CHEM SOC, V98, P6416 LAHMANI F, 1976, J PHYS CHEM-US, V80, P2623 LANGANIS ED, 1983, J AM CHEM SOC, V105, P7457 LIU MTH, 1972, J PHYS CHEM-US, V76, P797 LIU MTH, 1973, CAN J CHEM, V51, P2393 LIU MTH, 1974, J CHEM SOC P2, P937 LIU MTH, 1977, CAN J CHEM, V55, P3596 LIU MTH, 1982, CHEM SOC REV, V11, P127 MOORE CB, 1964, J CHEM PHYS, V41, P3504 SCHMITZ E, 1965, CHEM BER, V98, P2509 SCHMITZ E, 1967, CHEM BER, V100, P2093 SCHMITZ E, 1971, 23RD INT C PUR ALL C, V2, P283 SHEPARD RA, 1967, J ORG CHEM, V32, P3197 SHILOV AE, 1968, TETRAHEDRON LETT, P4177 SMITH NP, 1979, J CHEM SOC P2, P213 SMITH RAG, 1975, J CHEM SOC P2, P686 SNYDER JP, 1972, TETRAHEDRON LETT, P4347 TAYLOR EC, 1979, CHEM REV, V79, P181 TURRO NJ, 1980, J AM CHEM SOC, V102, P7576 TURRO NJ, 1982, J AM CHEM SOC, V104, P1754 VOIGT E, 1975, CHEM BER, V108, P3326 ZOLLINGER H, 1978, ANGEW CHEM INT EDIT, V17, P141; NR: 28; TC: 8; J9: J CHEM SOC PERKIN TRANS 2; PG: 4; GA: A2035Source type: Electronic(1
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