Reaction of a range of α-pyrrolecarboxylic acids, in which the ring is highly substituted by electron-withdrawing or -donating groups, with 1-chloromethyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis (tetrafluoroborate)(FâTEDAâBF4) gives the corresponding α-fluoropyrroles in 32â47% yields; 2-fluoroporphobilinogen (FâPBG), of potential use as an inhibitor of the enzyme porphobilinogen (PBG) deaminase, has been synthesized by this method.
一系列β-
吡咯羧酸的反应,其中环被吸电子或给电子基团高度取代,与1-
氯甲基-4-
氟-1,4-二
氮杂
双环[2.2.2]辛烷双(四
氟硼酸盐)(F-
TEDA-
BF4)反应,以32-47%的产率得到相应的β-
氟吡咯;2-
氟卟啉原(F-PBG)可用作酶
卟啉原(PBG)
脱氨酶的
抑制剂,已经通过这种方法合成。