Global ETD Search

1	Darstellung von Sauerstoff-Heterocyclen durch rhodiumkatalysierte Tandem-Hydroformylierung von ungesättigten Alkoholen Roggenbuck, Rafael. January 2001 (has links) (PDF) Dortmund, Universiẗat, Diss., 2001. Sauerstoffheterocyclen Diole
2	Zur Vanadium(V)-katalysierten Oxidation von Bromid und deren Anwendung in der Synthese von Aplysiapyranoid A und strukturell einfacher, bromierter O-Heterocyclen Greb, Marco. Unknown Date (has links) (PDF) Universiẗat, Diss., 2004--Würzburg.
3	Oxabicyclen aus der [4+3]-Cycloaddition De-novo-Synthese von [beta]-C-Glykosiden und des Lacton-Fragments der (+)-Mevinsäuren / Mentzel, Matthias. January 2000 (has links) (PDF) Hannover, Universiẗat, Diss., 2000.
4	Oxabicyclen aus der -Cycloaddition De-novo-Synthese von b-C-Glykosiden und des Lacton-Fragments der (+)-Mevinsäuren / Mentzel, Matthias. Unknown Date (has links) (PDF) Universiẗat, Diss., 2000--Hannover.
5	Hydroformylierung und Hydroaminomethylierung von Ortho-Alkenylphenolen Untersuchungen zur Synthese benzoanellierter Heterocyclen und pharmakologisch aktiver Aminoalkylphenole / Schmidt, Andreas. Unknown Date (has links) (PDF) Universiẗat, Diss., 2001--Dortmund.
6	Synthesis with Perfect Atom Economy: Generation of Furan Derivatives by 1,3-Dipolar Cycloaddition of Acetylenedicarboxylates at Cyclooctynes Banert, Klaus, Bochmann, Sandra, Ihle, Andreas, Plefka, Oliver, Taubert, Florian, Walther, Tina, Korb, Marcus, Rüffer, Tobias, Lang, Heinrich 25 September 2014 (has links) (PDF) Cyclooctyne and cycloocten-5-yne undergo, at room temperature, a 1,3-dipolar cycloaddition with dialkyl acetylenedicarboxylates 1a,b to generate furan-derived short-lived intermediates 2, which can be trapped by two additional equivalents of 1a,b or alternatively by methanol, phenol, water or aldehydes to yield polycyclic products 3b–d, orthoesters 4a–c, ketones 5 or epoxides 6a,b, respectively. Treatment of bis(trimethylsilyl) acetylenedicarboxylate (1c) with cyclooctyne leads to the ketone 7 via retro-Brook rearrangement of the dipolar intermediate 2c. In all cases, the products are formed with perfect atom economy. Technische Universität Chemnitz Publikationsfonds Kaskadenreaktionen Cyclopropene Diels-Alder-Reaktionen dipolare Zwischenstufen Epoxide Orthoester Sauerstoffheterocyclen Reaktionsmechanismen Retro-Brook-Reaktionen gespannte Verbindungen cascade reactions cyclopropenes Diels-Alder reactions dipolar intermediates epoxides orthoesters oxygen heterocycles reaction mechanisms retro-Brook reactions strained compounds Technische Universität Chemnitz Publication funds ddc:540 Epoxide Ortho-Ester Sauerstoffheterocyclen
7	Synthesis with Perfect Atom Economy: Generation of Furan Derivatives by 1,3-Dipolar Cycloaddition of Acetylenedicarboxylates at Cyclooctynes Banert, Klaus, Bochmann, Sandra, Ihle, Andreas, Plefka, Oliver, Taubert, Florian, Walther, Tina, Korb, Marcus, Rüffer, Tobias, Lang, Heinrich 25 September 2014 (has links) Cyclooctyne and cycloocten-5-yne undergo, at room temperature, a 1,3-dipolar cycloaddition with dialkyl acetylenedicarboxylates 1a,b to generate furan-derived short-lived intermediates 2, which can be trapped by two additional equivalents of 1a,b or alternatively by methanol, phenol, water or aldehydes to yield polycyclic products 3b–d, orthoesters 4a–c, ketones 5 or epoxides 6a,b, respectively. Treatment of bis(trimethylsilyl) acetylenedicarboxylate (1c) with cyclooctyne leads to the ketone 7 via retro-Brook rearrangement of the dipolar intermediate 2c. In all cases, the products are formed with perfect atom economy. info:eu-repo/classification/ddc/540 ddc:540

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