Journal
TETRAHEDRON
Volume 64, Issue 4, Pages 708-713Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2007.11.027
Keywords
malononitrile; benzylidenemalononitriles; tetracyanocyclopropanes; cyclopropane formation
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The new reaction was found: the direct formation of cyclopropanes from activated olefins and C-H acids. The action of free halogen or active halogen containing compounds on the equal amounts of benzylidenemalononitriles and malononitrile in basic alcohol solutions results in the formation of 3-aryl-1, 1,2,2-tetracyanocyclopropanes in 65-95% yields. Thus, the new simple and efficient way to 3-aryl substituted tetracyanocyclopropanes was found directly from such simple and reasonable starting compounds as benzylidenemalonomitriles and malononitrile. (C) 2007 Elsevier Ltd. All rights reserved.
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