Scope of nitriles with respect to compound 4a.
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Reaction conditions: 1 (0.20 mmol), DIC (0.20 mmol), LiHMDS (0.20 mmol), 60 °C, 6 h, N2, isolated yield. DIC = N,N′-diisopropylcarbodiimide.
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Reaction conditions: 1 (0.20 mmol), DIC (0.20 mmol), LiHMDS (0.20 mmol), 60 °C, 6 h, N2, isolated yield. DIC = N,N′-diisopropylcarbodiimide.