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Reaction scope. All reactions were performed under an argon atmosphere in 1 mL of solvent, 1a (0.55 mmol), and LiOt-Bu (0.55 mmol), unless otherwise specified. (See Experimental Section.) (a) Refers to the reaction conditions shown in Table 1, entry 1 (General Method). (b) Reaction stirred for 4 h. (See Experimental Section.) Yields reported are isolated yields.
