Novel applications of alkyl fluorides in organic synthesis: Versatile nitrogen protecting groups
作者:George Theodoridis
DOI:10.1016/s0040-4039(98)02111-x
日期:1998.12
2-fluoroethyl group as a nitrogen protecting group was demonstrated. The stability of alkyl fluorides, such as 2-fluoroethyl, to a variety of reaction conditions, makes them attractive nitrogen protecting groups. The 2-fluoroethyl group was easily introduced, in good yields, by the treatment of the NH group with potassium carbonate and 2-bromo-1-fluoroethane. Reaction of the 2-fluoroethyl group with boron
证明了2-氟乙基作为氮保护基的潜力。烷基氟化物(例如2-氟乙基)在各种反应条件下的稳定性使其成为有吸引力的氮保护基。通过用碳酸钾和2-溴-1-氟乙烷处理NH基,可以容易地以高收率引入2-氟乙基。2-氟乙基与三溴化硼的反应导致氟被溴取代,得到相应的2-溴乙基,其易于通过已知方法除去。