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Hoppe I, Hoppe D, Boche G, Marsch M, Harms K. Bildung von enantiomerenangereicherten Lithiumindeniden mit (−)-Spartein — Strukturen, stereospezifische Substitution, Einfluß des Lösungsmittels. Angew Chem Int Ed Engl 1995. [DOI: 10.1002/ange.19951071926] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Kouroupis P, Hansen HJ. From Colchicine and Some of Its Derivatives to 1,2,3,9,10-Pentamethoxybenzo[a]heptalenes. Helv Chim Acta 1995. [DOI: 10.1002/hlca.19950780517] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Suzuki N, Kondakov DY, Kageyama M, Kotora M, Hara R, Takahashi T. Novel type of carbozirconation reaction of alkynes. Tetrahedron 1995. [DOI: 10.1016/0040-4020(94)01138-p] [Citation(s) in RCA: 53] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Alkylierung kontra Protolyse: Alternative Synthesewege der Reaktion von μ-Hydroxy-cyclooctadien(1,5)-rhodium(I) Dimer mit Methylderivaten des TiIV. Synthese, Röntgenkristallstrukturanalyse und heterogen-katalytische Testung des neuartigen oxoverbrückten Titan-Rhodium-Komplexes {(μ3(Rh,Rh,Ti) -O) 4[RhI(COD-1,5)]4[TiIV(tC4H9O) 2]2}. J Organomet Chem 1994. [DOI: 10.1016/0022-328x(94)80041-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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57
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Seebach D, Beck AK, Schmidt B, Wang YM. Enantio- and diastereoselective titanium-TADDOLate catalyzed addition of diethyl and bis(3-buten-1-yl) zinc to aldehydes a full account with preparative details. Tetrahedron 1994. [DOI: 10.1016/s0040-4020(01)89373-x] [Citation(s) in RCA: 148] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Heuer M, Hohgardt K, Heinemann F, Kühne H, Dietrich W, Grzelak D, Müller D, Welzel P, Markus A, Heijenoort YV, Heijenoort JV. Structural analogues of the antibiotic moenomycin a with a D-glucose-derived unit F. Tetrahedron 1994. [DOI: 10.1016/s0040-4020(01)85066-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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59
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Stohrer I, Hoffmann HMR. Highly Diastereoselective Aldol Reaction of Bicyclo[3.2.1]oct-6-en-3-ones and 8-Oxabicyclo[3.2.1]oct-6-en-3-ones. (E)-Selective conversion into ?-alkylidene ketones. Helv Chim Acta 1993. [DOI: 10.1002/hlca.19930760604] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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A carbohydrate approach to polyol fragments of amphotericin and the trienomycin- and mycotrienin antibiotics. Tetrahedron 1993. [DOI: 10.1016/s0040-4020(01)96261-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Screttas CG, Steele BR. Activated alkyl- and allyl-alkali metal reagents: Contrasting behaviour towards ethylene. J Organomet Chem 1993. [DOI: 10.1016/0022-328x(93)83106-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Scholz J, Nolte M, Krüger C. Monoazadien-Komplexe elektronenarmer Übergangsmetalle, I. Zirconocen(1-aza-1,3-dien)1-Komplexe: Synthese, Struktur und Reaktionen. ACTA ACUST UNITED AC 1993. [DOI: 10.1002/cber.19931260335] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Wünsch B, Höfner G, Bauschke G. Stereoselektive Synthese neuer zentral wirksamer Tricyclen vom Benzomorphan-Typ mit 2-Phenylethylamin Partialstruktur. Arch Pharm (Weinheim) 1993. [DOI: 10.1002/ardp.19933260208] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Diastereoselective synthesis of enantiomeric tertiary alcohols via nucleophilic additions to protected D- and L-erythrulose derivatives. ACTA ACUST UNITED AC 1992. [DOI: 10.1016/s0957-4166(00)86047-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Reetz MT, Haning H, Stanchev S. Ligand effects in selective carbonyl addition reactions of organomanganese and cerium reagents. Tetrahedron Lett 1992. [DOI: 10.1016/s0040-4039(00)60907-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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66
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Zschage O, Schwark JR, Krämer T, Hoppe D. Enantiomerically enriched 1-(N,N-diisopropylcarbamoyloxy)-1,3-dimethylallyllithium: stereochemistry of the stannylation, titanation, and the homoaldol reaction. Tetrahedron 1992. [DOI: 10.1016/s0040-4020(01)86586-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Paulsen H, Hoppe D. Synthesis of the insect pheromone (+)-eldanoline by enantioselective homoaldol reaction. Tetrahedron 1992. [DOI: 10.1016/0040-4020(92)80017-a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Sparteine complexes of lithiated primary O-2-alkenyl carbamates stereochemistry of the lithium-titanium exchange and application for the synthesis of enantiomerically enriched γ-lactones. Tetrahedron 1992. [DOI: 10.1016/0040-4020(92)80016-9] [Citation(s) in RCA: 74] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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69
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von dem Bussche-Hünnefeld JL, Seebach D. Enantioselective preparation of sec. Alcohols from aldehydes and dialkyl zinc compounds, generated in situ from Grignard reagents, using substoichiometric amounts of TADDOL-titanates. Tetrahedron 1992. [DOI: 10.1016/0040-4020(92)80023-9] [Citation(s) in RCA: 93] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Reetz MT, Raguse B, Marth CF, Hügel HM, Bach T, Fox DN. A rapid injection NMR study of the chelation controlled Mukaiyama aldol addition: TiCl4 versus LiClO4 as the Lewis acid. Tetrahedron 1992. [DOI: 10.1016/0040-4020(92)80024-a] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Asymmetric synthesis of diastereomerically and enantiomerically pure α-amino-γ-nitro carboxylic esters via Michael addition of the titanated bislactim ether of cyclo (-L-Val-Gly-) to nitroolefines. Tetrahedron 1992. [DOI: 10.1016/0040-4020(92)80011-4] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Reetz MT, Stanchev S, Haning H. Cram selectivity in the reaction of 2-phenylpropanal with alkyllithium reagents: Myth and reality. Tetrahedron 1992. [DOI: 10.1016/s0040-4020(01)89872-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Reetz MT. Neue Wege zur Nutzung von Aminosäuren als chirale Bausteine in der organischen Synthese. Angew Chem Int Ed Engl 1991. [DOI: 10.1002/ange.19911031204] [Citation(s) in RCA: 103] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Haarmann H, Eberbach W. The use of furanyl titanium compounds for the synthesis of 2,4-substituted furans. Tetrahedron Lett 1991. [DOI: 10.1016/s0040-4039(00)92116-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Raifeld YE, Nikitenko AA, Arshava BM. Compounds of (i-PrO)3 TiX as novel reagents for regioselective oxirane ring opening. ACTA ACUST UNITED AC 1991. [DOI: 10.1016/s0957-4166(00)82001-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Schmidt B, Seebach D. Katalytische und stöchiometrische enantioselektive Additionen von Diethylzink an Aldehyde mit Hilfe eines neuartigen chiralen Spirotitanats. Angew Chem Int Ed Engl 1991. [DOI: 10.1002/ange.19911030124] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Fr�hlich HO, G�bel A. Beitr�ge zur Chemie organometallischer metallacyclischer �bergangsmetallverbindungen. I. Synthese und Eigenschaften von Li2(solv)x und seine Umsetzung mit CO2. Z Anorg Allg Chem 1989. [DOI: 10.1002/zaac.19895770113] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Floriani C, Solari E, Corazza F, Chiesi-Villa A, Guastini C. Atrans-Dimethyl Derivative of Octahedral TiIV: Alkylation and Arylation of TiIV-Schiff Base Complexes. ACTA ACUST UNITED AC 1989. [DOI: 10.1002/anie.198900641] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Floriani C, Solari E, Corazza F, Chiesi-Villa A, Guastini C. Einetrans-Me2TiIV-Verbindung mit oktaedrisch koordiniertem Ti-Atom: Alkylierungen und Arylierungen von TiIV-Komplexen mit Schiff-Basen. Angew Chem Int Ed Engl 1989. [DOI: 10.1002/ange.19891010130] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Floriani C, Corazza F, Lesueur W, Chiesi-Villa A, Guastini C. A Sensitive Spectroscopic Probe for Monitoring Changes in the Coordination Sphere of Titanium: Eight-Membered Dioxatitanacycles and Their Organometallic Derivatives. ACTA ACUST UNITED AC 1989. [DOI: 10.1002/anie.198900661] [Citation(s) in RCA: 58] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Floriani C, Corazza F, Lesueur W, Chiesi-Villa A, Guastini C. Eine empfindliche Sonde für Veränderungen in der Koordinationssphäre von Titan: Achtgliedrige Dioxatitanacyclen und ihre metallorganischen Derivate. Angew Chem Int Ed Engl 1989. [DOI: 10.1002/ange.19891010131] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Seebach D. Structure and Reactivity of Lithium Enolates. From Pinacolone to SelectiveC-Alkylations of Peptides. Difficulties and Opportunities Afforded by Complex Structures. ACTA ACUST UNITED AC 1988. [DOI: 10.1002/anie.198816241] [Citation(s) in RCA: 680] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Seebach D. Struktur und Reaktivität von Lithiumenolaten, vom Pinakolon zur selektivenC-Alkylierung von Peptiden – Schwierigkeiten und Möglichkeiten durch komplexe Strukturen. Angew Chem Int Ed Engl 1988. [DOI: 10.1002/ange.19881001206] [Citation(s) in RCA: 274] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Gais HJ, Vollhardt J, Lindner HJ, Paulus H. Synthese und Struktur von [cyclo-C3H4–SO2Ph]2Ti[OCH ((CH3)2]2, einemC-titanierten „α-Sulfonylcarbanion”. Angew Chem Int Ed Engl 1988. [DOI: 10.1002/ange.19881001128] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Seebach D, Adam G, Gees T, Schiess M, Weigand W. Scope and limitations of the TiCl4-mediated additions of isocyanides to aldehydes and ketones with formation of α-hydroxycarboxylic acid amides. ACTA ACUST UNITED AC 1988. [DOI: 10.1002/cber.19881210319] [Citation(s) in RCA: 74] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Brehm M, Dauben WG, Köhler P, Lichtenthaler FW. Beweis der (S,S)-Konfiguration von (—)-Bisseton durch Synthese ausD-Glucose. Angew Chem Int Ed Engl 1987. [DOI: 10.1002/ange.19870991230] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Structural study of titanated phosphonoacetates: reagents for stereoconvergent Knoevenagel condensations. J Organomet Chem 1987. [DOI: 10.1016/0022-328x(87)80040-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Yasuda H, Nakamura A. Dien-, Alkin-, Alken- und Alkyl-Komplexe früher Übergangsmetalle: Strukturen und synthetische Anwendungen in Organischer Chemie und Polymerchemie. Angew Chem Int Ed Engl 1987. [DOI: 10.1002/ange.19870990806] [Citation(s) in RCA: 74] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Seebach D, Aebi JD, Gander-Coquoz M, Naef R. Stereoselektive Alkylierung an C(?) von Serin, Glycerins�ure, Threonin und Weins�ure �ber heterocyclische Enolate mit exocyclischer Doppelbindung. Helv Chim Acta 1987. [DOI: 10.1002/hlca.19870700426] [Citation(s) in RCA: 152] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Kasatkin AN, Kulak AN, Tolstikov GA. ?-complexes of transition metals in organic synthesis. 1. cross-coupling of organotitanium compounds with allyl halides in the presence of palladium complexes. Russ Chem Bull 1987. [DOI: 10.1007/bf00959380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Hoppe D, Gonschorrek C, Schmidt D, Egert E. Highly regio- and syn-diastereoselective synthesis of 4-hydroxy-1,2-alkadienylcarbamates from α-titanatedl 2-alkynylcarbamates and aldehydes1,2. Tetrahedron 1987. [DOI: 10.1016/s0040-4020(01)81651-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Floriani C, Ciurli S, Chiesi-Villa A, Guastini C. Eine neue Klasse von Organozirconium(IV)-Verbindungen: Alkylderivate von Tetramethyltetraazadibenzo[14]annulenatozirconium(IV). Angew Chem Int Ed Engl 1987. [DOI: 10.1002/ange.19870990127] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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4-Oxy-substituted 1-lithio-1,2-alkadienyl carbamates: Trapping of configuratively stable allenic carbanions and stereospeific 1,4-elimination for the synthesis of alk-3-en-1-ynyl carbamates. Tetrahedron Lett 1987. [DOI: 10.1016/s0040-4039(01)80989-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Krämer T, Hoppe D. Reagent-controlled enantioselective homoaldol reaction with chiral 1-oxyallyllithium derivatives. Enantio-divergent tuning by achiral titanium reagents. Tetrahedron Lett 1987. [DOI: 10.1016/s0040-4039(00)95614-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Reetz MT, Peter R, Itzstein MV. Titanium-Mediated Stereoselective Knoevenagel Condensation of Ethyl (Diethoxyphosphoryl)acetate with Aldehydes. ACTA ACUST UNITED AC 1987. [DOI: 10.1002/cber.19871200123] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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