sodium tetrahydroborate; sodium ethanolate in ethanol 1 h; Heating;

1: 67 percent / CuCl, Cu, N-ethylmorpholine / various solvent(s) / 15 h / 70 - 80 °C 2: 56 percent / NaBH4, NaOEt / ethanol / 1 h / Heating View Scheme

1: 67 percent / CuCl, Cu, N-ethylmorpholine / various solvent(s) / 15 h / 70 - 80 °C 2: 56 percent / NaBH4, NaOEt / ethanol / 1 h / Heating View Scheme