نتایج جستجو برای: bucherer
تعداد نتایج: 25 فیلتر نتایج به سال:
Mathematische Einfuhrung in die Electronentheorie. By A. H. Bucherer, University of Bonn. (Teubner.)
2-Amino-2′-hydroxy-1,1′-binaphthyl [NOBIN (1); Fig. 1] was first prepared as a racemate by Kočovský in 1991 via oxidative coupling of 2-naphthol and 2-naphthylamine in MeOH using stoichiometric tert-butylamine/ copper(II) chloride1–3. Subsequently, a variant employing aqueous iron(III) chloride was reported4,5, and (±)-NOBIN has been prepared from (±)-BINOL (3; Fig. 1) by a Bucherer reaction6. ...
The configuration of one of the four isomers of 2-aminonorbornane-2-carboxylic acid (C8H1302N) has been determined to be (lR,2R,4S) by X-ray crystallography, utilizing anomalous scattering. The hydrobromide salt of this isomer, (-)-2-exo-aminonorbornane-2-carboxylic acid, cryst$lizes in space group P212121 with four molecules per unit cell of dimensions a = 6.986, b = 22.669, and c = 6.150 A. T...
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