Cohen; Raper
Journal of the Chemical Society, 1904 , vol. 85, p. 1269
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Cohen; Smithells
Journal of the Chemical Society, 1914 , vol. 105, p. 1910
1: With magnesium in tetrahydrofuran; ethylene dibromide
T=20°C; 1.5 h; Heating / reflux;
2: With boric acid trimethyl ester in tetrahydrofuran
T=-78 - 20°C;
3: With hydrogenchloride in tetrahydrofuran; water