Add time:08/26/2019         Source:sciencedirect.com

Using the TiCl3H2O2 radical-generating method, we have successfully characterized by EPR at ca. 25°C the radicals formed from the substrate n-propyl formate: CH3CH2ĊHOCHO, CH3ĊHCH2OCHO, and ĊH2CH2CH2OCHO. As expected on the basis of previous studies in our laboratory, the first two radicals showed a long-range formyl-proton coupling and the last one did not. Moreover, the size of the γ- and δ-CH formyl-proton couplings in CH3CH2ĊHOCHO and CH3ĊHCH2OCHO, respectively, agreed with the dependence of such couplings on radical structure previously predicted for species of types ĊOCHO and ĊCOCHO.

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