Works matching IS 0018019X AND DT 1992 AND VI 75 AND IP 4
Results: 36
Complexes of Rhodium(III) with Two Chelating C⁁N Ligands and One Diimine Ligand.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1320, doi. 10.1002/hlca.19920750434
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Efficient Synthesis of Enantiomerically Pure α-Ionone from ( R)- and ( S)-α-Damascone.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1023, doi. 10.1002/hlca.19920750405
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Base Hydrolysis of Pentaaminecobalt(III) Complexes: The [CoX(dien) (dapo)]<sup> n+</sup> system. Part 1. Syntheses, structures, configuration, and spectroscopy.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1130, doi. 10.1002/hlca.19920750416
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Nucleosides. Part L.. Structure of lumazine N<sup>1</sup>-(2′-deoxy- D-ribonucleosides) ( = 1-(2′-deoxy- D-ribofuranosyl)pteridine-2,4(1 H,3 H)-diones): A revision of the anomeric configuration.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1267, doi. 10.1002/hlca.19920750427
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Synthesis of Coumarins and Derivatives. Part 1. Biomimetic synthesis of esculetin and halogenated derivatives.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1061, doi. 10.1002/hlca.19920750409
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A New Synthesis of Coprine and O-Ethylcoprine.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1078, doi. 10.1002/hlca.19920750411
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Synthèse et propriétés photochromiques de 1, 3-dihydrospiro[2 H-indole-2,3′-[3 H]pyrimido[5,4-f][1,4]benzoxazines] et de 1,3-dihydrospiro[2 H-indole-2,7′-[7 H]thiazolo[5,4- f][1,4]benzoxazines].
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1185, doi. 10.1002/hlca.19920750419
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Synthesis and Properties of Macrobicyclic Cryptates Incorporating Five- and Six-Membered Biheteroaryl Units.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1221, doi. 10.1002/hlca.19920750422
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Caro-Cryptands: Tris-carotenoid macrobicyclic ligands-synthesis, crystal structure, and dinuclear copper(I) complexes.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1069, doi. 10.1002/hlca.19920750410
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Mitteilungen.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1341, doi. 10.1002/hlca.19920750436
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Cycloaddition of Carbodiimides with a Heteroaromatic Substituent to Allenic Acids.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1262, doi. 10.1002/hlca.19920750426
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Catalytic One-Pot Osmylation of Cyclohexadienes: Stereochemical and conformational studies of the resulting polyols.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1052, doi. 10.1002/hlca.19920750408
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Synthesis and X-Ray Structural Studies of '4,7,13-Trioxa-1,10-diaza-5,6-benzocyclopentadecane-2,9-dione' ( = 5,6,9,10-Tetrahydro-2 H, 8 H-benzo[ b][1,4,10]trioxa[7,13]diazacyclopentadecene-311(4 H,12 H)-dione) and '4,7,13,16-Tetraoxa-1,10-diaza-5,6-benzocyclooctadecane-2,9-dione' ( = 5,6,8,9,12,13-Hexahydro-2 H,11 H-benzo[b][1,4,10,13]tetraoxa- [7,16]diazacyclooctadecene-3,14(4 H, 15 H)-dione)
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1313, doi. 10.1002/hlca.19920750433
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Trialkyltin Compounds as Neutral Carriers for Anions in PVC Liquid Membranes and Complex Formation with Oxoanions.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1012, doi. 10.1002/hlca.19920750404
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Photolytic Reactions of ( o-Allylbenzyl)dicarbonyl(η<sup>5</sup>-cyclopentadienyl)iron.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1123, doi. 10.1002/hlca.19920750415
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The Vinylidene/Acyl Coupling at Rhenium Centers.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1305, doi. 10.1002/hlca.19920750432
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S<sub>N</sub>2 or Electron Transfer?? A new technique discriminates the mechanisms of oxidative addition of alkyl halides to corrinato- and porphyrinatocobalt(I).
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 995, doi. 10.1002/hlca.19920750403
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1,7-Dideaza-2′-deoxyadenosine: Building blocks for solid-phase synthesis and secondary structure of base-modified oligodeoxyribonucleotides.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1111, doi. 10.1002/hlca.19920750414
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Ring-Transformation von Imidazolidin-2,4-dionen ( = Hydantoinen) zu 4 H-Imidazolen bei der Umsetzung mit 3-(Dimethylamino)-2,2-dimethyl-2 H -azirin.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1251, doi. 10.1002/hlca.19920750425
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Axially Dissymmetric diphosphines in the Biphenyl Series: Crystal structures of three new group-VIII metal complexes of (6,6′-dimethyl-1,1′-biphenyl-2,2′-diyl)bis(diphenylphosphine) ( = biphemp).
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1211, doi. 10.1002/hlca.19920750421
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Heterocyclen aus Bis(alkoxycarbonyl)keten-ethylen-acetalen ( = Dialkyl-2-(1,3-dioxolan-2-yliden)propan-1,3-dioate). Synthese und Eigenschaften einer neuen Klasse von Pyrazolium-Betainen.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1039, doi. 10.1002/hlca.19920750407
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Base Hydrolysis of Pentaaminecobalt (III) Complexes: The [CoX(dien) (dapo)]<sup> n+</sup> system. Part 3. The internal conjugate base mechanism.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1172, doi. 10.1002/hlca.19920750418
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Benzene Oxidation by 'Bare' FeO<sup>+</sup> in the Gas Phase.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1281, doi. 10.1002/hlca.19920750429
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Confromational Studies on Peptides Containing Enantiometric α-Methyl α-Amino Acids. Part I. Differential conformational properties of ( R)- and ( S)-2-methylaspartic acid.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1198, doi. 10.1002/hlca.19920750420
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Studies on the Enzymatic Acylation of Quinic Acid, Shikimic Acid, Shikimic Acid, and Their Derivatives in Organic Solvents.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1297, doi. 10.1002/hlca.19920750431
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Die Entwicklung der Carotinoid-Chemie im Spiegel der Helvetica Chimica Acta 1922-1991.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 941, doi. 10.1002/hlca.19920750402
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Ab- initio-Studien an N- Acyliminium-Ionen.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1095, doi. 10.1002/hlca.19920750413
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Struktur zweier trans-Bis ( N, N-dimethylethylendiamin)kobalt(III)-Komplexe. Simulation der sterischen Ligand-Ligand-Wechselwirkungen durch ein 'Molecular-Mechanics'-Modell.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1245, doi. 10.1002/hlca.19920750424
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Synthesis and Photochemistry of 5,5-Dimethyl-1 H-pyrrol-2(5 H)-one and of Some N-Substituted Derivatives.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1333, doi. 10.1002/hlca.19920750435
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Kinetic Study on Stability of Schiff Base of Pyridoxal 5′-Phosphate and Leucine in Water Media with Cationic Surfactants.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1029, doi. 10.1002/hlca.19920750406
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Base Hydrolysis of Pentaaminecobalt(III) Complexes: The [CoX(dien) (dapo)]<sup>n+</sup> system. Part 2. Structure and reactivity of the pentacoordinate intermediate.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1147, doi. 10.1002/hlca.19920750417
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Eine neue einfache Synthese spirocyclischer 1 H-Chinolin-Derivate.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1274, doi. 10.1002/hlca.19920750428
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Stereoselectivity in Reactions of Metal Complexes. Part XIV.. Use of circular dichroism to determine the stereoselective formation of [M(his)<sub>2</sub>] and [M(PhEt-sal)<sub>2</sub>] (M = Ni<sup>2+</sup>, Cu<sup>2+</sup>, his = histidine, PhEt-sal = N-(1-phenylethyl)salicylaldimine)
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1288, doi. 10.1002/hlca.19920750430
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Masthead.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. fmi, doi. 10.1002/hlca.19920750401
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The Diels- Alder Chemoselectivity of 3,4,6,7-Tetramethylidenebicyclo[3.2.1]octane-2- exo, 8- syn-diyl Derivatives.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1085, doi. 10.1002/hlca.19920750412
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Pterin Chemistry. Part 92.. Loading experiments with 6α,β-tetrahydro- L-[3′-<sup>2</sup>H<sub>1</sub>] biopterin.
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- Helvetica Chimica Acta, 1992, v. 75, n. 4, p. 1237, doi. 10.1002/hlca.19920750423
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