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Substrate Scope for Macrocyclizationa,b
aReaction conditions: 5 % catalyst and 5% Phen was added to a MeCN solution (30 mL) of 1a (0.1 mmol) and PIDA (0.2 mmol), and reaction was kept under Ar at 50 °C for 24 h.b Isolated yield.c 0.5 mmol scale.
