fig2
Figure 2. Substrate scope of Nazarov-type cyclization. Reaction conditions: 0.2 mmol scale; 10 mol% 4a; CHCl3 (1.0 mL); 30 ℃; 12 h; 1:2 = 1.5:1. Isolated yields.
Figure 2. Substrate scope of Nazarov-type cyclization. Reaction conditions: 0.2 mmol scale; 10 mol% 4a; CHCl3 (1.0 mL); 30 ℃; 12 h; 1:2 = 1.5:1. Isolated yields.
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