Resumen de The GC MS Observation of Intermediates in a Stepwise Grignard Addition Reaction.
This article describes a three-hour laboratory experiment for the third-year organic chemistry lab whereby the stable organic intermediates and final product of the Grignard addition of 3 equivalents of phenylmagnesium bromide to diethyl carbonate are observed. A 1-mL aliquot is removed from the reaction at the midpoint of addition and subjected to GC�MS analysis. An interesting mass spectral exercise shows the presence of the intermediates ethyl benzoate and benzophenone as well as the product triphenylmethanol.
