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2004
Cyclopropanation reactions
O 0138
Michael Addition Reactions of Grignard Reagents to 2-Halogenoacrylates: A
Method for the Synthesis of Polysubstituted Cyclopropane Com46- 043 Convenient
pounds. — Grignard reagents or organolithium reagents react with 2-haloacrylates (I)
to yield cyclopropane 1,2-diesters directly. The transformation proceeds through
Michael addition of the organometal reagent to the haloacrylate followed by a second
Michael addition of the resulting activated halocarboxylate to another haloacrylate.
— (CHEN, C.; XI*, C.; JIANG, Y.; HONG, X.; Tetrahedron Lett. 45 (2004) 31,
6067-6069; Dep. Chem., Tsinghua Univ., Beijing 100084, Peop. Rep. China; Eng.)
— Mais
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