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  • Title: Synergistic effect of additives on cyclopropanation of olefins.
    Author: Cheng D, Huang D, Shi Y.
    Journal: Org Biomol Chem; 2013 Sep 14; 11(34):5588-91. PubMed ID: 23896608.
    Abstract:
    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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