701 research outputs found

    Addition of arylchlorocarbenes to .alpha.,.beta.-unsaturated esters. Absolute rates, substituent effects, and variable reactivities

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    PT: J; CR: BALASUBRAMANIYA.V, 1983, TETRAHEDRON, V39, P1475 BEENS H, 1967, J CHEM PHYS, V47, P1183 BERSON JA, 1974, J AM CHEM SOC, V96, P6175 BERSON JA, 1974, J AM CHEM SOC, V96, P6177 BOWMAN RM, 1974, J AM CHEM SOC, V96, P692 BROWN WG, 1966, J AM CHEM SOC, V88, P233 CALDWELL RA, 1978, J AM CHEM SOC, V100, P2905 COX DP, 1983, TETRAHEDRON LETT, V24, P5313 CREED D, 1976, J AM CHEM SOC, V98, P621 DEHMLOW EV, 1984, ANGEW CHEM INT EDIT, V23, P706 DOYLE MP, 1984, TETRAHEDRON LETT, V25, P901 DOYLE MP, 1986, TETRAHEDRON LETT, V27, P4395 DOYLE MP, 1987, CHEM DIAZIRINES, CH8 GILBERT WI, 1939, J ORG CHEM, V3, P611 GORDON M, 1975, EXCIPLEX GRAHAM WH, 1965, J AM CHEM SOC, V87, P4396 HOUK KN, 1984, J AM CHEM SOC, V106, P4293 HOUK KN, 1985, TETRAHEDRON, V41, P1555 HUISGEN R, 1963, ANGEW CHEM INT EDIT, V2, P633 KNIBBE H, 1967, J CHEM PHYS, V47, P184 KWIE WW, 1963, TETRAHEDRON LETT, P405 LAMBERT JB, 1983, TETRAHEDRON LETT, V24, P3799 LEONHARDT H, 1963, BER BUNSEN PHYS CHEM, V63, P791 LIU MTH, 1987, CHEM DIAZIRINES, CH5 LIU MTH, 1987, J ORG CHEM, V52, P323 LIU MTH, 1987, J ORG CHEM, V52, P4223 LIU MTH, 1987, TETRAHEDRON LETT, V28, P1011 LOUTFY RO, 1969, J AM CHEM SOC, V91, P3984 MOSS RA, 1967, TETRAHEDRON LETT, P4905 MOSS RA, 1969, J ORG CHEM, V34, P2220 MOSS RA, 1970, J AM CHEM SOC, V92, P6951 MOSS RA, 1977, J AM CHEM SOC, V99, P4105 MOSS RA, 1979, J AM CHEM SOC, V101, P5088 MOSS RA, 1979, TETRAHEDRON LETT, P4721 MOSS RA, 1980, ACCOUNTS CHEM RES, V13, P58 MOSS RA, 1985, REACTIVE INTERMEDIAT, V3, CH3 MOSS RA, 1986, J AM CHEM SOC, V108, P7028 MOSS RA, 1987, TETRAHEDRON LETT, V28, P4779 NAZAKI K, 1941, J AM CHEM SOC, V63, P2585 OKADA T, 1968, J CHEM PHYS, V49, P4717 RONDAN NG, 1980, J AM CHEM SOC, V102, P1770 SAKAI M, 1977, B CHEM SOC JP, V50, P1232 SAUER J, 1967, ANGEW CHEM INT EDIT, V6, P16 SCHOELLER WW, 1982, ANGEW CHEM INT ED EN, V12, P932 SKELL PS, 1969, J AM CHEM SOC, V91, P7131 TANIGUCHI Y, 1972, CHEM PHYS LETT, V13, P596 TURRO NJ, 1980, J AM CHEM SOC, V102, P7578 TURRO NJ, 1982, J AM CHEM SOC, V104, P1754 TURRO NJ, 1987, J AM CHEM SOC, V109, P4973 VAN SP, 1978, J AM CHEM SOC, V100, P3895 YANG NC, 1968, J AM CHEM SOC, V90, P5654; NR: 51; TC: 66; J9: J AMER CHEM SOC; PG: 10; GA: Q6555Source type: Electronic(1

    Reactivity and selectivity in intermolecular insertion reactions of chlorophenylcarbene

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    PT: J; CR: DOYLE MP, 1987, CHEM DIAZIRINES, CH8 DOYLE MP, 1987, J ORG CHEM, V52, P1619 GOULD IR, 1985, TETRAHEDRON, V41, P1587 GRAHAM WH, 1965, J AM CHEM SOC, V87, P4396 KIRMSE W, 1964, CARBENE CHEM MOSS RA, 1985, REACTIVE INTERMEDIAT, V3, CH3 MOSS RA, 1986, J AM CHEM SOC, V108, P7028 PADWA A, 1969, J ORG CHEM, V34, P2728 SEYFERTH D, 1967, J ORGANOMET CHEM, V7, P405 SEYFERTH D, 1968, J AM CHEM SOC, V90, P2944 SEYFERTH D, 1970, J ORG CHEM, V35, P1989 SEYFERTH D, 1973, J AM CHEM SOC, V75, P6763 SOUNDARARAJAN N, IN PRESS J AM CHEM S STANG PJ, 1987, J AM CHEM SOC, V109, P5019 STEINBECK K, 1978, TETRAHEDRON LETT, P1103 STEINBECK K, 1981, ANGEW CHEM INT EDIT, V20, P773; NR: 16; TC: 18; J9: TETRAHEDRON LETT; PG: 4; GA: R2217Source type: Electronic(1

    "Through the windows of a Baptist Meeting House": Religion, politics and the Nonconformist Conscience in the life of Sir George White, M.P.

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    With the compilation of the New Dictionary of National Biography, under the general editorship of Colin Matthew, the contributions of many more of the Free Church men and women who helped shape nineteenth and twentieth-century Britain will be acknowledged. Among the debutants in the revised canon of great Britons will be Sir George White MP, 1 the man described by the British Weekly as the 'foremost lay leader of English Nonconformity in our generation' ,2 yet a politician largely ignored by historians of Edwardian Britain.3 This is a significant oversight, for White featured prominently in Free-Church politics in the early twentieth century, chairing the Nonconformist Committee in the House of Commons and acting as a bridge between old-style dissenting Radicalism and the new(er) Liberalism of practical politicians like Lloyd George.4 Although 'plain and modest' with 'no pretentions to brilliance', White reached the top in business, politics and the Baptist denomination through the classic Victorian virtues of hard work, dedication and devotion,S his success resting, in part, on his power as a speaker with 'the enviable faculty granted to the best speakers of saying, and thinking clearly and strongly while he is on his feet,.6 This paper, which is based primarily on press reports of his life and death, will outline White's achievements in religion, business and politics, illustrating the way these elements interacted, and looking, in particular, at the three areas in which religion most obviously influenced his political views: class relations, education and temperance

    Role of plasma temperature and residence time in stagnation plasma synthesis of c-BN nanopowders

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    The synthesis of cubic boron nitride (c-BN) nanoparticles is examined experimentally by introducing borane ammonia precursor into a thermal plasma oriented in a stagnation point geometry, where nanoparticles are formed in the flow field upon reaching a cold substrate. The quasi-one dimensional flow field allows for correlating the plasma temperature and residence time to the final particle phase, morphology, size, and purity. Constant temperature and residence time cases are studied to assess the parameter’s affect on the resulting particle characteristics. The as-synthesized nanoparticles are characterized by high-resolution transmission electron microscopy (HRTEM) and x-ray diffraction (XRD). Cubic structured particles are synthesized at plasma temperatures of 3000-8000K and precursor decomposition times ≥0.030s. The highest purity samples are produced at a plasma temperature and residence time of 6500K and 0.075s, respectively. Samples with lower c-BN content are observed with higher percentages of hexagonal and amorphous phases. The particle morphology shifts from spherical agglomerates to faceted shapes as c-BN purity increases. Also, particle size undergoes an increase in nominal size. The resulting phase and purity is proposed to be governed by growth mechanisms that result in high-energy particle-particle interactions where the energy transferred is sufficient for atomic re-alignment into a denser phase.M.S.Includes bibliographical referencesby Jonathan M Doyl

    Activation parameters for the reaction of phenylchloro carbene with pyridine, tri- n -butyltin hydride, and triethylsilane; evidence against the need to invoke reversibly formed complexes in the reaction of this carbene with olefins

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    PT: J; CR: CALDIN EF, 1964, FAST REACTIONS SOLUT, CH1 DOYLE MP, UNPUB TETRAHEDRON LE GIESE B, 1978, ANGEW CHEM INT EDIT, V17, P595 GIESE B, 1980, ANGEW CHEM INT EDIT, V19, P835 GIESE B, 1980, LIEBIGS ANN CHEM, P725 GIESE B, 1981, CHEM BER, V114, P3306 GIESE B, 1982, ANGEW CHEM INT EDIT, V21, P310 GOULD IR, 1985, TETRAHEDRON, V41, P1587 HOUK KN, 1984, J AM CHEM SOC, V106, P4291 HOUK KN, 1984, J AM CHEM SOC, V106, P4293 HOUK KN, 1985, TETRAHEDRON, V41, P1555 JACKSON JE, 1988, IN PRESS J AM CHEM S, V110 MOSS RA, 1986, J AM CHEM SOC, V108, P7028 PLATZ MS, 1983, TETRAHEDRON LETT, V24, P4763 SCAIANO JC, 1988, CHEM KINETICS SMALL, P73 SKELL PS, 1969, J AM CHEM SOC, V91, P7131 SOUNDARARAJAN N, 1988, IN PRESS J AM CHEM S, V110 TURRO NJ, 1987, J AM CHEM SOC, V109, P4973 WEAST RC, 1970, HDB CHEM PHYSICS, F42 ZUGRAVESCU I, 1976, N YLID CHEM; NR: 20; TC: 36; J9: TETRAHEDRON LETT; PG: 4; GA: T9526Source type: Electronic(1

    Formation of a dipolar adduct in the reaction of arylchlorocarbenes with diethyl maleate

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    PT: J; CR: COX DP, 1983, TETRAHEDRON LETT, V24, P5313 DEHMLOW EV, 1984, ANGEW CHEM INT EDIT, V23, P706 DOYLE MP, 1984, TETRAHEDRON LETT, V25, P901 GOULD IR, 1985, TETRAHEDRON, V41, P1587 LAMBERT JB, 1983, TETRAHEDRON LETT, V24, P3799 LIU MTH, 1977, TETRAHEDRON LETT, P3139 LIU MTH, 1985, J CHEM SOC CHEM COMM, P982 LIU MTH, 1985, TETRAHEDRON LETT, V26, P3071 LIU MTH, 1986, J PHYS CHEM-US, V90, P75 MORIARITY RM, 1985, J AM CHEM SOC, V107, P1357 MOSS RA, 1979, J AM CHEM SOC, V101, P4736 MOSS RA, 1980, ACCOUNTS CHEM RES, V13, P58 MOSS RA, 1983, TETRAHEDRON LETT, V24, P2719 MOSS RA, 1985, REACTIVE INTERMEDIAT, V3 YANG NC, 1968, J AM CHEM SOC, V90, P5654; NR: 15; TC: 7; J9: TETRAHEDRON LETT; PG: 4; GA: D9916Source type: Electronic(1

    1995 Sub-Librarians Meeting: Let a Woman in Your Life: the Women in Conan Doyle\u27s Life and Fiction

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    At the 23rd (Irregular) meeting, the Sub-Librarians greeted members of multiple Chicago area scion societies at the Harold Washington Library Center. The meeting began with a champagne and dessert reception in the lower lobby and then moved into the video theater for the program. Toasts were given by Katherine Rankin, Deborah Schlesinger and others. Marsha Pollak, ASH, welcomed everyone and introduced Ely. M. Liebow, professor of English at Northeastern Illinois University and author of Dr. Joe Bell: Model for Sherlock Holmes. Liebow spoke on the topic Let a Woman in Your Life: The Women in Arthur Conan Doyle\u27s Life and Fiction

    Mass spectrometric identification of polycycloaddition of arylchlorocarbenes and fluorenylidene to buckministerfullerene

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    PT: J; CR: ALLEMAND PM, 1991, J AM CHEM SOC, V113, P1050 DOYLE MP, 1986, TETRAHEDRON LETT, V27, P4395 DOYLE MP, 1987, CHEM DIAZIRINES, CH8 KOMATSU, 1993, CHEM LETT, P2163 KROTO HW, 1985, NATURE, V318, P162 KRUSIC PJ, 1991, SCIENCE, V254, P1183 MOSS RA, 1989, ACCOUNTS CHEM RES, V22, P15 SHI S, 1992, J AM CHEM SOC, V114, P10656 SOUNDARARAJAN N, 1988, J AM CHEM SOC, V110, P7143 SUZUKI T, 1991, SCIENCE, V254, P1186 VASELLA A, 1992, ANGEW CHEM INT EDIT, V31, P1338 WUDL F, 1992, ACCOUNTS CHEM RES, V25, P157 WUDL F, 1993, BUCKMINSTERFULLERENE, CH13 XIE QS, 1992, J AM CHEM SOC, V114, P3978; NR: 14; TC: 1; J9: ORG MASS SPECTROM; PG: 3; GA: NY268Source type: Electronic(1

    Small and medium agility dogs alter their kinematics when the distance between hurdles differs

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    There is currently a lack of research examining the health and welfare implications for competitive agility dogs. The aim of this study was to examine if jump kinematics and apparent joint angles in medium (351 mm - 430 mm to the withers) and small (< 350 mm to the withers) agility dogs altered when distances between consecutive upright hurdles differ. Dogs ran a course of nine hurdles; three set at 3.6 m apart; three at 4 m apart and three at 5 m apart. Both medium (P=0.044) and small (P=0.006) dogs landed closer to the hurdle when consecutive hurdles were set at 3.6 m apart, with small dogs jumping slower at this distance (P=0.006). Results indicate that jump kinematics, but not apparent joint angles, alter when the spacing between hurdles differs. These findings may have implications for the health and welfare of agility dogs and should be used to inform future changes to rules and regulations
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