Citations Only: Recent submissions
Now showing items 881-900 of 990
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Efficient hydride-assisted isomerization of alkenes via rhodium catalysis
(The American Chemical Society: Organometallics, 2003-04-14)We find that alkenes isomerize rapidly in the presence of catalytic amounts of a hydroborating reagent and a rhodium compound. The hydroborating reagent is apparently responsible for the in situ generation of a metal hydride ... -
Transition-metal-promoted hydroboration of alkenes: a unique reversal of regioselectivity
(The American Chemical Society: The Journal of Organic Chemistry, 2002-04-19)When hydroboration of 1-octene is carried out in the presence of catalytic amounts of rhodium trichloride followed by the usual oxidation (hydrogen peroxide in aqueous alkali), only minor proportions of 1-octanol (2.4%) ... -
Stereochemistry and mechanisms of the addition of deuterium chloride to bicyclo[2.2.1]heptadiene (norbornadiene) and to tetracyclo[3.2.02,7.04,6]heptane (quadricyclene)
(The American Chemical Society: The Journal of Organic Chemistry, 1971-09-24)Addition of hydrogen chloride and deuterium chloride to bicyclo [2.2.1] heptadiene (I, norbornadiene) results in (unlabeled and labeled, respectively) exo-dehydronorbornyl chloride (III) and nortricyclyl chloride (IV). The ... -
Adenosine dialdehyde analogs I: regioselective synthesis of adenosine monoaldehydes
(Elsevier: Bioorganic and Medicinal Chemistry Letters, 1996-06-18)Selective borohydride reduction of adenosine dialdehyde (1) gave the known adenosine 2'-monoaldehyde (2). Reaction of 1 with N,N'-diphenylethylenediamine, followed by reduction and deblocking gave adenosine 3'-monoaldehyde ... -
Stereochemistry and mechanisms of cyclopropane ring cleavage. Addition of hydrogen chloride to tetracyclo[3.2.0.02,7.04,6]heptane-1,5-dicarboxylic acid (quadricyclenedicarboxylic acid)
(The American Chemical Society: The Journal of Organic Chemistry, 1971-09-24)Addition of hydrogen chloride to tetracyc10[3.2.0.0^2,7.0^4,6] heptane-l15-dicarboxylic acid (1, quadricyclenedicarboxylic acid) under various conditions results in two products, exo-5-chlorotricyclo[2.2,1.0^2,6] ... -
Rearrangements in the acetolysis of exo-dehydro-2-norbornyl p-bromobenzenesulfonate
(American Chemical Society: Journal of the American Chemical Society, 1966-07-05)exo-3-Deuteriodehydro-2-norbornyl p-bromobenzenesulfonate (VIIb) solvolyzes in glacial acetic acid to give about 7 % of an equimolar mixture of exo-3-deuteriodehydro-2-norbornyl acetate (VIId) and 7-deuteriodehydro-2-norbornyl ... -
The Mass spectral analyses of deuterated and undeuterated bridged polycyclic acetates
(The American Chemical Society: The Journal of Organic Chemistry, 1966-09-12)The mass spectral analyses of exo-dehydronorbornyl (Ia) and nortricyclyl (IIa) acetates are reported. In addition, the mass spectra are reported for exo-cis-3-deuteriodehydro-2-norbornyl acetate (IIIa) and for a sample ... -
Addition of acetic acid to norbornadiene. Mechanisms of addition reactions
(The American Chemical Society: The Journal of Organic Chemistry, 1966-09-12)The addition of acetic acid to norbornadiene (I) has been studied under a large variety of conditions and the extents of both homoconjugate addition and Wagner-Meerwein rearrangements accompanying addition have been ... -
The Uncatalyzed addition of acetic acid to norbornadiene
(The American Chemical Society: The Journal of Organic Chemistry, 1966-09-12)The uncatalyzed addition of acetic acid to norbornadiene (I) to give mixtures of ezo-dehydronorbornyl acetate (II) and nortricyclyl acetate (III) was studied. Rates of addition and ratios of II/III (degree of homoallylic ... -
The Catalyzed addition of acetic acid to norbornadiene
(The American Chemical Society: The Journal of Organic Chemistry, 1966-09-12)An investigation of the acid-catalyzed addition of acetic acid to norbornadiene (I)to form ezo-dehydronorbornyl acetate (II) and nortricyclyl acetate (III) has been carried out. Catalysis by sodium perchlorate was similar ... -
Atmospheric photochemistry of alkyl nitrates
(Elsevier: Journal of Photochemistry and Photobiology, 1990-04)Photoabsorption spectra of gaseous ethyl nitrate, n-propyl nitrate, 2-propyl nitrate, n-butyl nitrate and 3-methyl-1-butyl nitrate were quantitatively measured in the laboratory at room temperature for λ >185 nm. The spectra ... -
Geometrical isomers of bisimines of tetramethyl-1,3-cyclobutanedione
(The American Chemical Society: The Journal of Organic Chemistry, 1970-07) -
Radio science investigation on a Mercury Orbiter mission
(Planetary and Space Science, 1997-01)We review the results from Mariner 10 regarding Mercury’s gravity field and the results from radar ranging regarding topography. We discuss the implications of improving these results, including a determination of the polar ... -
Indication, from Pioneer 10/11, Galileo, and Ulysses data, of an apparent anomalous, weak, long-range acceleration
(American Physical Society, 1998-10-05)Radio metric data from the Pioneer 10/11, Galileo, and Ulysses spacecraft indicate an apparent anomalous, constant, acceleration acting on the spacecraft with a magnitude $\sim 8.5\times 10^{-8}$ cm/s$^2$, directed towards ... -
Light scattering and phase behavior of lysozyme-PEG mixtures
(Elsevier, 2006-03-03)Measurements of liquid-liquid phase transition temperatures (cloud points) of mixtures of a protein (lysozyme) and a polymer, poly(ethylene glycol) (PEG) show that the addition of low molecular weight PEG stabilizes the ...