Now showing items 111-120 of 405
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 ...
Decreased formation of inositol trisphosphate in Madin-Darby canine kidney cells under conditions of [beta]-glucosidase inhibition
(Elsevier, 1992-02-01)
Recent work has demonstrated the enhancement of hormone-stimulated inositol trisphosphate formation in renal epithelial cells under conditions of glucosylceramide depletion. The role of glucosylceramide metabolism was ...
Thermodynamics of ammonium halopallidates I. Heat capacity and thermodynamic properties of (NH4)2PdCl6 at temperatures from 6 K to 350 K
(Elsevier, 1992-09)
The heat capacity of ammonium hexachloropallidate (NH4)2PdCl6 was measured at temperatures from 6 K to 350 K by adiabatic calorimetry. The heat-capacity curve is smooth and without anomalies. It rises rapidly from T0 to T ...
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 ...
Comparison of the isolation of adducts fo 2'-deoxycytidine and 2'-deoxyguanosine with phenylglycidyl ether by high-performance liquid chromatography on a reversed-phase column and a polystyrene-divinylbenzene column
(Elsevier, 1991)
2'-Deoxycitidine (dCyd) and 2'-deoxyguanosine (dGuo) were subjected to reaction with phenylglycidyl ether (PGE) in methanol in order to study the formation of the corresponding 2'-deoxynucleoside adducts. Separation methods ...
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 ...
Synthesis and characterization of precursors for group II metal aluminates
(John Wiley & Sons, Ltd., 1997-10)
Precursors to Group II metal aluminates (MAI 2 O 4 , M=Mg, Ca, Ba, Sr) are synthesized from inexpensive starting materials including Group II metal oxides/hydroxides, Al(OH) 3 , triethanolamine (TEA) and ethylene glycol, ...
The synthesis of functional polyphosphazenes and their surfaces
(John Wiley & Sons, Ltd., 1998-10)
The macromolecular substitution approach for the synthesis of polyphosphazenes provides access to many different polymers. However, it precludes the use of reagents that contain two or more functional groups because such ...