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2005
Cyclopropane derivatives
Q 0021
Diethyl Cyclopropylidenemalonate: Facile Preparation, Generation in situ, and
Transformations. — A convenient approach to the previously unknown di03- 082 Various
ethyl cyclopropylidenemalonate (IV) is described. The potential to generate (IV) in situ
by mesylation of (IIIa) or by use of the stable acetate precursor (XII) is applied in a
series of Michael addition, cycloaddition, and 1,3-dipolar cycloaddition reactions. The
cyclopropane ring not only enhances the reactivity, but also adds to the versatility of its
products, since it can be regarded as an additional functional group for further transformations in library synthesis. — (DE MEIJERE*, A.; KOSTIKOV, R. R.;
SAVCHENKO, A. I.; KOZHUSHKOV, S. I.; Eur. J. Org. Chem. 2004, 19, 3992-4002;
Inst. Org. Biomol. Chem., Georg-August-Univ., D-37077 Goettingen, Germany;
Eng.) — Kieslich
2005
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