A One-Pot Generation of α-Chloro-α-Lithio Alkanephosphonates. A New Preparative Route to 1,2-Epoxyalkanephosphonates
作者:Kilsung Lee、Won Suk Shin、Dong Young Oh
DOI:10.1080/00397919208019263
日期:1992.2
Abstract Reaction of lithio anion derived from diethyl alkanephosphonate in the presence of 2 eq. of n-BuLi with benzenesulfonylchloride gives directly the corresponding diethyl-1-chloro-1-lithioalkanephosphonate, which reacts in situ with carbonyl compounds followed by intramolecular substitution reaction to give 1,2-epoxyalkanephosphonates.