magnesium in tetrahydrofuran T=0°C;

in diethyl ether T=-78 - 10°C;

1: With zinc(II) chloride in tetrahydrofuran T=-3 - 20°C; Inert atmosphere; 2: With N,N'-dimethyl-N,N'-propyleneurea; acetone oxime-o-p-benzenesulfonic ester in tetrahydrofuran T=20°C; 1.5 h; Inert atmosphere; 3: With hydrogenchloride; water in tetrahydrofuran T=20°C; 4 h; Inert atmosphere;

T=-78°C;

in diethyl ether refluxing for 2 h;;

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