hydrogen; nickel in tetrahydrofuran; ethanol 30 h; Ambient temperature;

1: 1.) ethylmagnesium bromide / 1.) THF, ether, 30 min, r.t.; 2.) ether, 10 min, 0 deg C 2: 92 percent / H2 / Raney nickel / tetrahydrofuran; ethanol / 30 h / Ambient temperature View Scheme

1: 1.) ethylmagnesium bromide / 1.) THF, ether, 30 min, r.t.; 2.) ether, 10 min, 0 deg C 2: 92 percent / H2 / Raney nickel / tetrahydrofuran; ethanol / 30 h / Ambient temperature View Scheme