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Proofs of absolute configuration were determined on the basis of conversion to the known methyl ester and a known α-thio derivative. Stereoregularity was inferred for other products on the basis of these proofs as well as on the basis of computational models. See Supporting Information.
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+ shows a strong preference for a bent geometry.
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Kinetics experiments were performed by varying the concentration of chlorinating agent 5a, BQ catalyst, and acid chloride substrate, and measuring the percent conversion at various times (see Supporting Information).
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