“…Reactions of boron trichloride have been studied with ethers having one oxygen atom in the molecule [ethylene oxide (46,47,85), propylene oxide (47, 85), epichlorohydrin (l-chloro-2,3-epoxypropane) (47), trimethylene oxide, tetrahydrofuran (46, 47, 85), and tetrahvdropyran (47, 85)] and with two in the molecule [1,3-dioxalane (54), 1,4-dioxan (54, 91, 98), and catechol methylene, dimethylene, propylene, and trimethylene ethers (54)]. Perfluoro-l-butyltetrahydrofuran, CsFieO, did not react with the trichloride even at 350°C.…”