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4 is the only Lewis acid examined that possesses basic counterions. The presence of isopropoxide also resulted in contamination of 6 with trace amounts of the corresponding isopropyl ester 9a
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4 is the only Lewis acid examined that possesses basic counterions. The presence of isopropoxide also resulted in contamination of 6 with trace amounts of the corresponding isopropyl ester 9a.
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There are only a few reports describing the participation of enamides in metal-catalyzed cycloisomerizations
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There are only a few reports describing the participation of enamides in metal-catalyzed cycloisomerizations
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3 and AgOTf for efficient cycloisomerization. No reaction occurred in the presence of TfOH alone
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3 and AgOTf for efficient cycloisomerization. No reaction occurred in the presence of TfOH alone.
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