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Our calculations find that the base strength is the primary factor that controls the catalytic capability of cocatalysts CH3CN, Propargylic acetates (1a) and Et3N. In the proton-transfer process, the trend of catalytic activity increases in the order: Et3N > 1a > CH3CN, which matches well with the enhanced trend of base strength (Et3N > 1a > CH3CN). Et3N is the most appropriate for the...
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