DOI: 10.1055/s-00000083

Synlett

Ausgabe 06 · Volume 1991 · 1991 DOI: 10.1055/s-002-1472

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369
Astruc, Didier: The Transformation of Aromatics into Regio- and Stereocontrolled Heterobifunctional Cyclohexadienes Mediated by Temporary Sandwich Complexation. Roles of Electron, Proton, Hydride and Hydrogen-Atom Transfers
381
Grotjahn, D. B.; Dötz, K. H.: Carbene Complexes of Chromium Bearing Nitrogen Substituents

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391
Kan, Toshiyuki; Matsuda, Fuyuhiko; Yanagiya, Mitsutoshi; Shirahama, Haruhisa: Stereocontrolled Construction of B-Ring of Grayanotoxins via Samarium(II) Iodide Promoted Pinacol Coupling Cyclization
393
Nishikawa, Toshio; Isobe, Minoru; Goto, Toshio: Synthetic Studies on the Bicyclo[7.3.1]tridecenediyne System in an Antitumor Antibiotic, Dynemicin A
395
Differding, Edmond; Duthaler, Rudolf O.; Krieger, Arlette; Rüegg, Gabriela M.; Schmit, Chantal: Electrophilic Fluorinations with N-Fluorobenzenesulfonimide: Convenient Access to α-Fluoro- and α,α-Difluorophosphonates
397
Dreller, S.; Dyrbusch, M.; Hoppe, D.: Synthesis of Enantiomerically Enriched Allenes via Chiral, Configurationally Stable 1-Lithio-2-alkynyl Carbamates
401
Kita, Yasuyuki; Matsuda, Satoshi; Kitagaki, Shinji; Tsuzuki, Yasunori; Akai, Shuji: Chemistry of Silylketene: A One-Pot Synthesis of α-Silyl Ketones
403
Guy, Alain; Dubuffet, Thierry; Doussot, Joël; Godefroy-Falguieres, Annie: Regio- and Stereoselective Opening of Phenyloxirane by Lithium Azide: A Direct Access to 2-Azido-1-phenylethanol
405
Prince, Philippe; Gandour, Richard D.: Facile Synthesis of Methyl 7-Methoxy-2-naphthoate. An Improved Procedure for Monomethylation of 2,7-Naphthalenediol
407
Arcadi, Antonio; Cacchi, Sandro; Delmastro, Monica; Marinellia, Fabio: A Convenient Route to 2,2-Disubstituted 4-Pentynoic Acids from Meldrum's Acid
409
Arcadi, Antonio; Cacchi, Sandro; Delmastro, Monica; Marinella, Fabio: 5-Vinyl-4-pentynoic Acids Through the Palladium-Catalyzed Reaction of 4-Pentynoic Acid with Vinyl Triflates
412
Hart, David J.; Krishnamurthy, Ramanarayanan: Stereoselective Free Radical Reactions at C(20) of Steroid Side Chains
415
Charreau, Philippe; Ley, Steven V.; Vettiger, Thomas M.; Vile, Sadie: Use of Phenylsulphonylmethano Ethers in Synthesis: A New Versatile Route to Substituted Cyclic Ethers
417
Defoin, Albert; Pires, Joaquim; Streith, Jacques: Asymmetric Hetero-Diels-Alder Cycloadditions Using a Chiral N-Dienyl Lactam and Acylnitroso Dienophiles
420
Friesen, Richard W.; Phipps, Lori G.: Synthesis of 4,4-Dialkyl-1-iodo-3-buten-2-ones by the Reaction of Tertiary α-Allenic Alcohol Carbamates with N-lodosuccinimide and Aqueous Sodium Bicarbonate
423
Bulliard, Michel; Zeitz, Heinz-Georg; Giese, Bernd: Reversal of Diastereoselectivity in Reactions of Acyclic and Cyclic Radicals
425
Giese, Bernd; Bulliard, Michel; Zeitz, Heinz-Georg: Acyclic 1,2-Induction in Radical Reactions: The Importance of Allylic Strain Effects
428
Knölker, Hans-Joachim; Hartmann, Konrad: Transition Metal-Diene Complexes in Organic Synthesis; Part 8.1 Iron-Mediated Approach to the Discorhabdin and Prianosin Alkaloids
431
Brauer, Hartmut; Neumann, Wilhelm P.: Palladium-Catalyzed Cycloaddition of Alkynes (RC≡CR′) with Dimethylgermylene
433
Memmesheimer, Holger; Al-Dulayymi, Juma'a R.; Baird, Mark S.; Wettling, Thomas; Regitz, Manfred: Synthesis of 1-Chloro-2-vinyl-1H-phosphirenes by Trapping of Vinylcarbenes with Phosphaalkynes1
435
Barton, Derek H. R.; Jang, Doo Ok; Jaszberenyi, Joseph Cs: Radical Deoxygenaton of Secondary and Primary Alcohols with Phenylsilane
439
Furuta, Kyoji; Maruyama, Tohru; Yamamoto, Hisashi: Chiral (Acyloxy)borane Catalyzed Asymmetric Aldol Type Reaction of Ketene Silyl Acetals with Aldehydes
441
Danda, Hidenori; Furukawa, Yoshio; Umemura, Takeaki: Preparation of (4S)-4-Hydroxy-3-methyl-2-(2-propynyl)-2-cyclopenten-1-one by Sequential Combination of Enzymatic Hydrolysis and Mitsunobu Reaction
443
Dike, Suneel Y.; Ner, Dilip H.; Kumar, Ashok: A New Chemoenzymatic Enantioselective Synthesis of Optically Active Benzothiopyran and Benzothiazepin Ring System