申请人:University of Pittsburgh
公开号:US06806357B1
公开(公告)日:2004-10-19
A method of effecting a nucleophilic substitution of an alcohol to produce a target product includes the steps of: reacting the alcohol and a nucleophile with an azodicarboxylate and a phosphine. At least one of the azodicarboxylate and the phosphine includes at least one fluorous tag. In several embodiments, the azodicarboxylate includes at least one fluorous tag, and the phosphine includes at least one fluorous tag. A compound has the formula:
In the above formula n1, n2, n3, n4, n5, n6, n7, n8, n9 and n10 are independently 1 or 0. X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X11, X12, X13, X14, X15, X16, X17, X18, X19 and X20 are independently H, F, Cl, an alkyl group, an aryl group or an alkoxy group. R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15 and R16 are independently H, F, Cl, an alkyl group, an alkoxy group, a thioalkyl group, a dialkylamino group, a nitro group, a cyano group, a perfluoroalkyl group, a hydrofluoroalkyl group, a fluorinated ether group, a fluorinated amine group, O—Rf1, S—Rf2, or —N(Rf3)(R22), wherein R22 is an alkyl group or Rf4, and wherein Rf1, Rf2, Rf3 and Rf4 are independently a fluorous group selected from the group of a perfluoroalkyl group, a hydrofluoroalkyl group, a fluorinated ether group or a fluorinated amine group. At least one of R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15 or R16 is O—Rf1, S—Rf2, —N(Rf3)(R22), a perfluoroalkyl group, a hydrofluoroalkyl group, a fluorinated ether group or a fluorinated amine group.
一种实现醇的亲核取代以产生目标产物的方法,包括以下步骤:将醇和亲核试剂与偶氮二酸酯和膦反应。其中至少一个偶氮二酸酯和膦包含至少一个氟标记。在几种实施例中,偶氮二酸酯包括至少一个氟标记,而膦包括至少一个氟标记。化合物的式子为:在上述式子中,n1、n2、n3、n4、n5、n6、n7、n8、n9和n10独立地为1或0。X1、X2、X3、X4、X5、X6、X7、X8、X9、X10、X11、X12、X13、X14、X15、X16、X17、X18、X19和X20独立地为H、F、Cl、烷基、芳基或烷氧基。R1、R2、R3、R4、R5、R6、R7、R8、R9、R10、R11、R12、R13、R14、R15和R16独立地为H、F、Cl、烷基、烷氧基、硫代烷基、二烷基氨基、硝基、氰基、全氟烷基、氢氟烷基、氟代醚基、氟代胺基、O—Rf1、S—Rf2或—N(Rf3)(R22),其中R22为烷基或Rf4,而Rf1、Rf2、Rf3和Rf4独立地为氟标记,选自全氟烷基、氢氟烷基、氟代醚基或氟代胺基。其中至少一个R1、R2、R3、R4、R5、R6、R7、R8、R9、R10、R11、R12、R13、R14、R15或R16为O—Rf1、S—Rf2、—N(Rf3)(R22)、全氟烷基、氢氟烷基、氟代醚基或氟代胺基。