Now showing items 11-20 of 61
Vibrational analysis of 2,3,4-trichloropentanes
(Elsevier, 1990)
One meso form and the racemic isomer of 2,3,4-trichloropentane have been synthesized, and their infrared and Raman spectra analysed on the basis of a general force field refined for multiply-chlorinated hydrocarbons. ...
A new preparation of highly functionaized aromatic and heteroaromatic zinc and copper organometallics
(Elsevier, 1990)
Functionalized aromatic iodides possessing an ester, cyano, chloride or keto group can be converted to arylzinc iodides by reaction with zinc in DMF or DMAC. After transmetallation to the corresponding arylcopper, they ...
Incubation in cyclohexene decomposition at high temperatures
(John Wiley & Sons, Inc., 1990-02)
A detailed master equation simulation has been carried out for the thermal unimolecular decomposition of C 6 H 10 in a shock tube. At the highest temperatures studied experimentally [J. H. Kiefer and J. N. Shah, J. Phys. ...
SN2' Substitutions of 1,3-Dichloropropenes with the Functionalized Copper-Zinc Reagents RCu(CN)ZnX
(Elsevier, 1990)
The addition of benzenesulfenyl (or benzeneselenyl) chlorides to propargylic chlorides affords regio- and stereospecifically (E)-1,3-dichloro-2-phenylsulfenyl (or phenylselenyl) propenes (2a-c). These new reagents were ...
Positive-ion thermospray liquid chromatography--mass spectrometry: detection of organic acidurias
(Elsevier, 1990)
Positive-ion thermospray liquid chromatography--mass spectrometry (TSP-LC-MS) is used to detect organic acids via the direct injection of untreated urine from newborns and infants. Two methods are reported for the separation ...
Heat capacity of deuterated ammonium tetrafluoroborate ND4BF4 from 7 K to 348 K
(Elsevier, 1990-10)
The heat capacity of deuterated ammonium tetrafluoroborate ND4BF4 was measured from 7 K to 348 K by adiabatic calorimetry. The curve for heat capacity against temperature is smooth with a broad maximum between 120 K and ...
Ion-pair chromatography of inositol polyphosphates with N-methylimipramine
(Elsevier, 1990)
A novel counter-ion, N-methylimipramine, was synthesized and utilized in the separation of inositol phosphates by ion-pair chromatography. The structural identity of the counter-ion was documented by nuclear magnetic ...
Preparation of functionalized zinc and copper organometallics containing sulfur functionalities at the alpha or gamma position
(Elsevier, 1990)
[alpha]-Chloroalkyl phenyl sulfides 1 readily insert zinc in THF at 25 [deg]C (0.5-2 h), affording sulfur stabilized organozinc derivatives of type 2. The presence of a functional group such as an ester or a cyano group ...
Thermodynamic properties of ammonium haloplatinates I. Heat capacity and thermodynamic functions of ammonium hexachloroplatinate (NH4)2PtCl6 from 6 K to 348 K
(Elsevier, 1990-11)
The heat capacity of ammonium hexachloroplatinate (NH4)2PtCl6 was measured from 6 K to 348 K by adiabatic calorimetry. The heat-capacity curve is sigmate without anomalies. It rises rapidly from T --> 0 to 250 K where ...
Evaluation of menogaril in renal cell carcinoma
(Kluwer Academic Publishers; Springer Science+Business Media, 1990-03)
The Southwest Oncology Group (SWOG) studied the response rate and toxicity of menogaril (200 mg/m 2 i.v. q 28 days) in patients with advanced metastatic renal cell carcinoma. During the early stage of the trial two partial ...