1: tetraethylene glycol With sodium hydride in tetrahydrofuran; mineral oil
Inert atmosphere;
2: 2-lt;2-lt;2-lt;2-(benzyloxy)ethoxygt;ethoxygt;ethoxygt;ethyl 4-methylbenzenesulfonate in tetrahydrofuran; mineral oil
T=20°C; Inert atmosphere;
3: With water; sodium chloride in tetrahydrofuran; mineral oil
Inert atmosphere;
参考文献
Thomas, Joshua D.; Burke Jr., Terrence R.
Tetrahedron Letters, 2011 , vol. 52, # 33 p. 4316 - 4319