1: With copper(I) bromide in tetrahydrofuran; 2-methyl tetrahydrofuran
T=0 - 60°C; 4 h; Inert atmosphere;
2: With water in tetrahydrofuran; 2-methyl tetrahydrofuran
T=0°C; Inert atmosphere;
3: With sulfuric acid in tetrahydrofuran; 2-methyl tetrahydrofuran
1 h; Inert atmosphereReflux;
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