ACNP - Italian Periodicals Catalogue

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Results: 1-25 | 26-31

Results: 1-25/31

ENANTIOSELECTIVE ALLYLIC SUBSTITUTION OF CYCLIC SUBSTRATES BY CATALYSIS WITH PALLADIUM COMPLEXES OF P,N-CHELATE LIGANDS WITH A CYMANTRENE UNIT

Authors: KUDIS S HELMCHEN G

Citation: S. Kudis et G. Helmchen, ENANTIOSELECTIVE ALLYLIC SUBSTITUTION OF CYCLIC SUBSTRATES BY CATALYSIS WITH PALLADIUM COMPLEXES OF P,N-CHELATE LIGANDS WITH A CYMANTRENE UNIT, ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 37(21), 1998, pp. 3047-3050

(PHOSPHINO-OXAZOLINE)COPPER(II) COMPLEXES AS CHIRAL CATALYSTS FOR ENANTIOSELECTIVE DIELS-ALDER REACTIONS

Authors: SAGASSER I HELMCHEN G

Citation: I. Sagasser et G. Helmchen, (PHOSPHINO-OXAZOLINE)COPPER(II) COMPLEXES AS CHIRAL CATALYSTS FOR ENANTIOSELECTIVE DIELS-ALDER REACTIONS, Tetrahedron letters, 39(3-4), 1998, pp. 261-264

CHIRAL PHOSPHINOOXAZOLINES WITH A BI-CYCLIC OR TRICYCLIC OXAZOLINE MOIETY - APPLICATIONS IN PD-CATALYZED ALLYLIC ALKYLATIONS

Authors: WIESE B HELMCHEN G

Citation: B. Wiese et G. Helmchen, CHIRAL PHOSPHINOOXAZOLINES WITH A BI-CYCLIC OR TRICYCLIC OXAZOLINE MOIETY - APPLICATIONS IN PD-CATALYZED ALLYLIC ALKYLATIONS, Tetrahedron letters, 39(32), 1998, pp. 5727-5730

FIRST ENANTIOSELECTIVE SYNTHESIS OF DROXY-3,3A,4,6A-TETRAHYDROCYCLOPENTA[B]FURAN-2-ONE - A VERSATILE CHIRAL HETEROCYCLIC BUILDING-BLOCK())

Authors: KUDIS S HELMCHEN G

Citation: S. Kudis et G. Helmchen, FIRST ENANTIOSELECTIVE SYNTHESIS OF DROXY-3,3A,4,6A-TETRAHYDROCYCLOPENTA[B]FURAN-2-ONE - A VERSATILE CHIRAL HETEROCYCLIC BUILDING-BLOCK()), Tetrahedron, 54(35), 1998, pp. 10449-10456

SYNTHESIS AND APPLICATION OF THE FIRST CHIRAL AND HIGHLY LEWIS ACIDICSILYL CATIONIC CATALYST

Authors: JOHANNSEN M JORGENSEN KA HELMCHEN G

Citation: M. Johannsen et al., SYNTHESIS AND APPLICATION OF THE FIRST CHIRAL AND HIGHLY LEWIS ACIDICSILYL CATIONIC CATALYST, Journal of the American Chemical Society, 120(30), 1998, pp. 7637-7638

GLOSSARY OF PROBLEMATIC TERMS IN ORGANIC STEREOCHEMISTRY

Authors: HELMCHEN G

Citation: G. Helmchen, GLOSSARY OF PROBLEMATIC TERMS IN ORGANIC STEREOCHEMISTRY, Enantiomer, 2(3-4), 1997, pp. 315-318

NEW CHIRAL SOLVATING AGENTS FOR CARBOXYLIC-ACIDS - DISCRIMINATION OF ENANTIOTOPIC NUCLEI AND BINDING-PROPERTIES

Authors: BILZ A STORK T HELMCHEN G

Citation: A. Bilz et al., NEW CHIRAL SOLVATING AGENTS FOR CARBOXYLIC-ACIDS - DISCRIMINATION OF ENANTIOTOPIC NUCLEI AND BINDING-PROPERTIES, Tetrahedron : asymmetry, 8(24), 1997, pp. 3999-4002

PALLADIUM-CATALYZED ALLYLIC ALKYLATION WITH PHOSPHINOARYLDIHYDROOXAZOLE LIGANDS - FIRST EVIDENCE AND NMR SPECTROSCOPIC STRUCTURE DETERMINATION OF A PRIMARY OLEFIN-PD-O COMPLEX

Authors: STEINHAGEN H REGGELIN M HELMCHEN G

Citation: H. Steinhagen et al., PALLADIUM-CATALYZED ALLYLIC ALKYLATION WITH PHOSPHINOARYLDIHYDROOXAZOLE LIGANDS - FIRST EVIDENCE AND NMR SPECTROSCOPIC STRUCTURE DETERMINATION OF A PRIMARY OLEFIN-PD-O COMPLEX, Angewandte Chemie, International Edition in English, 36(19), 1997, pp. 2108-2110

FIRST ENANTIOSELECTIVE ALKYLATIONS OF MONOSUBSTITUTED ALLYLIC ACETATES CATALYZED BY CHIRAL IRIDIUM COMPLEXES

Authors: JANSSEN JP HELMCHEN G

Citation: Jp. Janssen et G. Helmchen, FIRST ENANTIOSELECTIVE ALKYLATIONS OF MONOSUBSTITUTED ALLYLIC ACETATES CATALYZED BY CHIRAL IRIDIUM COMPLEXES, Tetrahedron letters, 38(46), 1997, pp. 8025-8026

ENANTIOSELECTIVE CATALYSIS WITH COMPLEXES OF ASYMMETRIC P,N-CHELATE LIGANDS

Authors: HELMCHEN G KUDIS S SENNHENN P STEINHAGEN H

Citation: G. Helmchen et al., ENANTIOSELECTIVE CATALYSIS WITH COMPLEXES OF ASYMMETRIC P,N-CHELATE LIGANDS, Pure and applied chemistry, 69(3), 1997, pp. 513-518

CATALYTIC ASYMMETRIC HYDROSILYLATION OF KETONES USING RHODIUM-(I)-COMPLEXES OF CHIRAL PHOSPHINOOXAZOLINE LIGANDS

Authors: LANGER T JANSSEN J HELMCHEN G

Citation: T. Langer et al., CATALYTIC ASYMMETRIC HYDROSILYLATION OF KETONES USING RHODIUM-(I)-COMPLEXES OF CHIRAL PHOSPHINOOXAZOLINE LIGANDS, Tetrahedron : asymmetry, 7(6), 1996, pp. 1599-1602

DIASTEREOSELECTIVE OXIDATIVE COUPLING OF ENOLATES OF 3-PHENYLPROPIONIC ACID-DERIVATIVES - EPC SYNTHESIS OF ENT-HINOKININ

Authors: LANGER T ILLICH M HELMCHEN G

Citation: T. Langer et al., DIASTEREOSELECTIVE OXIDATIVE COUPLING OF ENOLATES OF 3-PHENYLPROPIONIC ACID-DERIVATIVES - EPC SYNTHESIS OF ENT-HINOKININ, Synlett, (11), 1996, pp. 1137

ASYMMETRIC 2-CENTER CATALYSIS - LEARNING FROM NATURE

Authors: STEINHAGEN H HELMCHEN G

Citation: H. Steinhagen et G. Helmchen, ASYMMETRIC 2-CENTER CATALYSIS - LEARNING FROM NATURE, Angewandte Chemie, International Edition in English, 35(20), 1996, pp. 2339-2342

PALLADIUM COMPLEX-CATALYZED ASYMMETRIC ALLYLIC SUBSTITUTIONS WITH NITROMETHANE - ENANTIOSELECTIVITIES EXCEEDING 99.9 PERCENT EE

Authors: RIECK H HELMCHEN G

Citation: H. Rieck et G. Helmchen, PALLADIUM COMPLEX-CATALYZED ASYMMETRIC ALLYLIC SUBSTITUTIONS WITH NITROMETHANE - ENANTIOSELECTIVITIES EXCEEDING 99.9 PERCENT EE, Angewandte Chemie, International Edition in English, 34(23-24), 1996, pp. 2687-2689

HIGHLY EFFICIENT NEW CATALYSTS FOR ENANTIOSELECTIVE TRANSFER HYDROGENATION OF KETONES

Authors: LANGER T HELMCHEN G

Citation: T. Langer et G. Helmchen, HIGHLY EFFICIENT NEW CATALYSTS FOR ENANTIOSELECTIVE TRANSFER HYDROGENATION OF KETONES, Tetrahedron letters, 37(9), 1996, pp. 1381-1384

ENANTIOMERICALLY PURE 5-SUBSTITUTED 2-OXO-CYCLOPENTANECARBOXYLATES BYCONJUGATE ADDITION OF CUPRATES TO ASYMMETRIC SHIELDED 2-OXO-CYCLOPENTENECARBOXYLATES

Authors: URBAN E KNUHL G HELMCHEN G

Citation: E. Urban et al., ENANTIOMERICALLY PURE 5-SUBSTITUTED 2-OXO-CYCLOPENTANECARBOXYLATES BYCONJUGATE ADDITION OF CUPRATES TO ASYMMETRIC SHIELDED 2-OXO-CYCLOPENTENECARBOXYLATES, Tetrahedron, 52(3), 1996, pp. 971-986

PREPARATION OF CHIRAL PHOSPHORUS, SULFUR AND SELENIUM-CONTAINING 2-ARYLOXAZOLINES

Authors: PEER M DEJONG JC KIEFER M LANGER T RIECK H SCHELL H SENNHENN P SPRINZ J STEINHAGEN H WIESE B HELMCHEN G

Citation: M. Peer et al., PREPARATION OF CHIRAL PHOSPHORUS, SULFUR AND SELENIUM-CONTAINING 2-ARYLOXAZOLINES, Tetrahedron, 52(21), 1996, pp. 7547-7583

A NEW CHIRAL SOLVATING AGENT FOR CARBOXYLIC-ACIDS BASED ON DIRECTED HYDROGEN-BONDING

Authors: STORK T HELMCHEN G

Citation: T. Stork et G. Helmchen, A NEW CHIRAL SOLVATING AGENT FOR CARBOXYLIC-ACIDS BASED ON DIRECTED HYDROGEN-BONDING, Recueil des travaux chimiques des Pays-Bas, 114(4-5), 1995, pp. 253-254

EPC SYNTHESIS OF 5-SUBSTITUTED 2-OXO-CYCLOPENTANECARBOXYLATES VIA CONJUGATE ADDITION OF CUPRATES TO ASYMMETRIC SHIELDED 2-OXO-CYCLOPENTENECARBOXYLATES

Authors: URBAN E KNUHL G HELMCHEN G

Citation: E. Urban et al., EPC SYNTHESIS OF 5-SUBSTITUTED 2-OXO-CYCLOPENTANECARBOXYLATES VIA CONJUGATE ADDITION OF CUPRATES TO ASYMMETRIC SHIELDED 2-OXO-CYCLOPENTENECARBOXYLATES, Tetrahedron letters, 36(40), 1995, pp. 7229-7232

DIASTEREOSELECTIVE OXIDATIVE COUPLING OF ENOLATES OF CHIRAL CARBOXYLIC-ACID DERIVATIVES

Authors: LANGER T ILLICH M HELMCHEN G

Citation: T. Langer et al., DIASTEREOSELECTIVE OXIDATIVE COUPLING OF ENOLATES OF CHIRAL CARBOXYLIC-ACID DERIVATIVES, Tetrahedron letters, 36(25), 1995, pp. 4409-4412

A SHORT SYNTHESIS OF (-)-CHOKOL-A

Authors: URBAN E KNUHL G HELMCHEN G

Citation: E. Urban et al., A SHORT SYNTHESIS OF (-)-CHOKOL-A, Tetrahedron, 51(47), 1995, pp. 13031-13038

NEW CHIRAL BETA-PHOSPHINOCARBOXYLIC ACIDS AND THEIR APPLICATION IN PALLADIUM-CATALYZED ASYMMETRIC ALLYLIC ALKYLATIONS

Authors: KNUHL G SENNHENN P HELMCHEN G

Citation: G. Knuhl et al., NEW CHIRAL BETA-PHOSPHINOCARBOXYLIC ACIDS AND THEIR APPLICATION IN PALLADIUM-CATALYZED ASYMMETRIC ALLYLIC ALKYLATIONS, Journal of the Chemical Society, Chemical Communications, (18), 1995, pp. 1845-1846

ENANTIOSELECTIVE ALLYLIC AMINATION WITH CHIRAL (PHOSPHINO-OXAZOLINE)PD CATALYSTS

Authors: VONMATT P LOISELEUR O KOCH G PFALTZ A LEFEBER C FEUCHT T HELMCHEN G

Citation: P. Vonmatt et al., ENANTIOSELECTIVE ALLYLIC AMINATION WITH CHIRAL (PHOSPHINO-OXAZOLINE)PD CATALYSTS, Tetrahedron : asymmetry, 5(4), 1994, pp. 573-584

TOTAL SYNTHESES, OPTICAL ROTATIONS AND FRAGRANCE PROPERTIES OF SANDALWOOD CONSTITUENTS - (-)-(Z)-BETA-SANTALOL AND (-)-(E)-BETA-SANTALOL AND THEIR ENANTIOMERS, ENT-BETA-SANTALENE

Authors: KROTZ A HELMCHEN G

Citation: A. Krotz et G. Helmchen, TOTAL SYNTHESES, OPTICAL ROTATIONS AND FRAGRANCE PROPERTIES OF SANDALWOOD CONSTITUENTS - (-)-(Z)-BETA-SANTALOL AND (-)-(E)-BETA-SANTALOL AND THEIR ENANTIOMERS, ENT-BETA-SANTALENE, Liebigs Annalen der Chemie, (6), 1994, pp. 601-609

ENANTIOMERICALLY PURE CYCLOALKENYLACETIC-ACID DERIVATIVES VIA PD-CATALYZED ASYMMETRIC ALLYLIC ALKYLATION AND SUBSEQUENT ENANTIOMERIC ENRICHMENT VIA IODOLACTONES

Authors: SENNHENN P GABLER B HELMCHEN G

Citation: P. Sennhenn et al., ENANTIOMERICALLY PURE CYCLOALKENYLACETIC-ACID DERIVATIVES VIA PD-CATALYZED ASYMMETRIC ALLYLIC ALKYLATION AND SUBSEQUENT ENANTIOMERIC ENRICHMENT VIA IODOLACTONES, Tetrahedron letters, 35(46), 1994, pp. 8595-8598

Risultati: 1-25 | 26-31