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2005
Cyclopropanation reactions
O 0138
Synthesis and Properties of gem-(Difluorocyclopropyl)amine Derivatives of Bicy— The addition of difluorocarbene to enamines derived from cyclic
12- 046 clo[n.1.0]alkanes.
ketones provides convenient access to bicyclic difluorocyclopropylamines with significantly different stabilities. The seven-membered fused-ring analogues are shown to be
the most stable ones. The thermal decomposition of (III) with following hydrolysis
leads to ring extension with formation of ketones (IV). — (NOWAK, I.; CANNON, J.
F.; ROBINS*, M. J.; Org. Lett. 6 (2004) 25, 4767-4770; Dep. Chem. Biochem.,
Brigham Young Univ., Provo, UT 84602, USA; Eng.) — Steudel
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