... Biomol. Chem., 2005, 3, 2150-2154 Show Compounds Show Chemical Terms. ... Scheme 4 Synthesis of alcohol 9; (i) oxalyl chloride, DCM, 0 °C to 25 °C; (ii) EtOH, pyridine, DCM, 0 to 25 °C (100%, two steps); (iii) Na, NH 3 –THF, −78 to −33 °C (84%); (iv) ethylene glycol, p ...