Now showing items 11-20 of 54
Synthesis and reactivity of open-chain and cyclic 2-cyano zinc and copper organometallics
(Elsevier, 1989)
Various open-chain and cyclic [beta]-cyano zinc and copper organometallics can be prepared by the reaction of the corresponding organic halides with zinc and subsequent transmetalation with CuCN [middle dot] 2 LiCl. They ...
Fluorescence yield near edge spectroscopy of [pi]-bonded CO on Fe(100)
(Elsevier, 1989-12-03)
Near edge X-ray absorption fine structure (NEXAFS) spectra of CO adsorbed on the Fe(100) surface are reported. Spectra, obtained by fluorescence yield (FYNES), are presented for each of the four individual CO adsorption ...
Production and characterization of antisera raised to the manninotrionate group [[alpha]--Galp-(1-->6)-[alpha]--Galp-(1-->6)--gluconate]
(Elsevier, 1989-06-15)
Manninotrionate [[alpha]--Galp-(1-->6)-[alpha]--Galp-(1-->6)--gluconate] was coupled to bovine serum albumin (BSA), and antisera were raised in rabbits to this carbohydrate--protein conjugate. The antisera were studied ...
Thermodynamics of thallium alkanoates VI. Thallium(I) n-heptanoate revisited
(Elsevier, 1989-04)
The heat capacity of thallium(I) n-heptanoate has been remeasured on a new sample on which the preparative procedures were modified to eliminate the 1-1 (salt+acid) complex (soap) in a previously studied sample. The ...
Mixed copper, zinc 2-amino benzylic organometallics as efficient reagents for the synthesis of heterocycles
(Elsevier, 1989)
The mixed copper, zinc benzylic organometallics 1a-1c react efficiently with various electrophiles. By the reaction with acyl chlorides, highly functionalized 2-substituted indoles are produced. The treatment of 1a with ...
Bovine testicular [beta]-galactosidase: Purification of enzyme fractions that exhibit high affinity for phosphomannosyl receptors
(Elsevier, 1989-11-01)
An improved method is described for the preparation of bovine testicular [beta]-galactosidase that allows the isolation of enzyme fractions that bind avidly to phosphomannosyl receptors. The procedure permits removal of a ...
Low nanogram detection of nucleotides using fast atom bombardment-mass spectrometry
(Elsevier, 1989-04)
The effect of trimethylsilyl (TMS) derivatization on detection limits of mononucleotides in fast atom bombardment-mass spectrometry (FAB-MS) was examined. FAB-MS methods were developed to optimize sensitivity using adenosine ...
An unusual reductive ring-opening of the 1,2,3,5,6,7-hexaazaacenaphthylene ring system
(Elsevier, 1989)
Studies on an unexpected reaction involving a reductive cleavage of the pyridazine moiety of a tricyclic heterocycle are described. Structure assignments for the products obtained from the reductive cleavage were made using ...
The reactivity of the highly functionalized copper, zinc reagents RCu(CN)ZnI toward 1-haloalkynes and acetylenic esters
(Elsevier, 1989)
The highly functionalized organometallics RCu(CN)ZnI 1 react efficiently with 1-haloalkynes providing polyfunctionalized alkynes in high yields. This method has been used to prepare a pheromone of the Amathes c-nigrum in ...