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A new synthetic strategy for the preparation of highly branched, or dendritic-graft, polypeptides is presented. The synthetic strategy is based on a repetitive sequence of ring-opening copolymerization and deprotection steps. Comonomers for the ring-openin ...
The water-soluble complexes [{RuCl2(mTPPMS)(2)}(2)], [RuCl2(PTA)(4)], [RhCl(mTPPMS)(3)], [RhCl(mTPPTS)(3)], and [RhCl(PTA)(3)] (mTPPMS=sodium salt of meta-sulfonatophenyl-diphenylphosphine, mTPPTS=sodium salt oftris(meta-sulfonatophenyl) phosphine, and PTA ...
Six different fluoroarenes were submitted to the same transformations. Direct deprotonation with alkyllithium or lithium dialkylamide as reagents and subsequent carboxylation afforded acids. These included 2,6-difluorobenzoic acid, 3,6-difluoro-2-iodobenzo ...
The adsorption and ordering of the molecule terephthalic acid (TPA), 1,4-benzene-dicarboxylic acid C6H4-(COOH)(2), on the reconstructed Au(111) surface has been studied in situ in ultrahigh vacuum by scanning tunneling microscopy (STM) at room temperature. ...
The superbasic mixt. of butyllithium and potassium tert-butoxide is powerful enough to enable the double proton abstraction from one ortho and one ortho' position of 4,4'-di-tert-butylbiphenyl. In this way, a series of functionalized derivs. becomes readil ...
Crystals of hexamethylenetetramine (HMT) with aliphatic dicarboxylic acids in 1:1 molar ratio exhibit different behaviour depending on the number n of carbons in the aliphatic chain. For n=8 and 10, incommensurate phases have been observed, while for n=9, ...
A deprotonation study was performed using 2,3,5-trichloropyridine, 3,5-dichloro-2-fluoropyridine, and 5-chloro-2,3-difluoropyridine as the substrates. Upon reaction with lithium diisopropylamide (LDA), deprotonation occurred exclusively at the 4-position. ...
Thin boron-doped diamond films were prepd. by HF CVD (hot filament chem. vapor deposition technique) on conductive p-Si substrate (Si/diamond). The morphol. of these Si/diamond electrodes was investigated by SEM and Raman spectroscopy. The electrochem. beh ...
A quant. structure-reactivity relationship for the Michael-type addn. of thiols onto acrylates was detd. Several thiol-contg. peptides were investigated by examg. the correlation between the second-order rate const. of their addn. onto PEG-diacrylate and t ...
The Diels-Alder adduct of furfuryl alcohol and maleic anhydride was converted into dimethyl 5-exo,6-exo-dihydroxy-1{[tris (isopropyl)silyloxy] methyl} -7-oxabicyclo[2.2.1]heptane-2-exo,3-exo-dicarboxylate (12). Regioselective monosilylation of diol 12 gave ...
