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- W2023276693 abstract "8,8-Diformylheptafulven (5) wurde zum ersten Mal hergestellt durch Hydridabstraktion aus (Cycloheptatrienyl)malonaldehyd-Natriumsalzen (2 und 3). 5 steht in Lösung mit dem Valenzisomeren 6 in einem lösungsmittelabhängigen Gleichgewicht. Die Struktur von 5 wurde durch 1H- und 13C-NMR-Spektrum, Dipolmoment (5.24 D) sowie eine Röntgenstrukturanalyse gesichert; Dipolmoment und chemische Reaktivität wurden auch durch MNDO-Berechnungen abgeschätzt. – Reaktionen von 5 mit Elektrophilen (→7) und mit Nucleophilen (→8 – 14) werden beschrieben. Syntheses with Aliphatic Dialdehydes, XLII. — (2,4,6-Cycloheptatrien-1-ylidene)malonaldehyde (8,8-Diformylheptafulvene) — Synthesis, Structure, and Reactions 8,8-Diformylheptafulvene (5) was synthesized for the first time by hydride abstraction from sodium salts of(cycloheptatrienyl)malonaldehydes (2 and 3). In solution, 5 exists in a solventdependent equilibrium with its valence isomer 6. The structure of 5 was determined by means of its 1H and 13C NMR spectrum, dipole moment (5.24 D), and an X-ray analysis; its dipole moment and chemical reactivity were also estimated by MNDO calculations. — Reactions of 5 with electrophiles (→7) and with nucleophiles (→ 8 – 14 are described." @default.
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- W2023276693 date "1985-10-14" @default.
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- W2023276693 title "Synthesen mit aliphatischen Dialdehyden, XLII. (2,4,6-Cycloheptatrien-1-yliden)malonaldehyd (8,8-Diformylheptafulven) — Herstellung, Struktur und Reaktionen" @default.
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