SYNTHETIC COMMUNICATIONS, 24(10), 1395-1401 (1994) ... IICT Communication No. ... treated with freshly prepared Grignard reagent (prepared from 2- bromomethyl-1,3-dioxalane (8.43 g, 50 m-nol) and magnesium (1.22 g, 51 mmol) in THF (30 ml) and allowed to stir for 24 h. It ...