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Org Biomol Chem. 2013 Sep 14;11(34):5588-91. doi: 10.1039/c3ob40751a.

Synergistic effect of additives on cyclopropanation of olefins.

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  • 1Beijing National Laboratory of Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.


An efficient cyclopropanation of olefins with Zn(CH2I)2, a catalytic amount of CCl3CO2H, and 1,2-dimethoxyethane at room temperature is described. A wide variety of olefins, including acid-sensitive substrates, can be cyclopropanated in 71-99% yield.

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