1.1: thionyl chloride / 1 h / -20 °C 1.2: 25 °C 2.1: triethylamine / tetrahydrofuran / 0.5 h 2.2: 3 h / 20 °C 3.1: lithium borohydride / tetrahydrofuran / 20 °C View Scheme
Freer, Isabel; Pedrocchi-Fantoni, Giuseppe; Picken, Douglas J.; Overton, Karl H.
Journal of the Chemical Society, Chemical Communications, 1981 , # 3 p. 80 - 82