作者:Riccardo Surmont、Guido Verniest、Filip Colpaert、Gregor Macdonald、Jan Willem Thuring、Frederik Deroose、Norbert De Kimpe
DOI:10.1021/jo802272n
日期:2009.2.6
5-Alkoxymethyl-2-aryl-3-fluoro-1H-pyrroles and 2-aryl-3-fluoro-1H-pyrrole-5-carbaldehydes were efficiently prepared from the corresponding 2-aryl-5-(bromomethyl)-1-pyrrolines via electrophilic α,α-difluorination of the imino bond, using Selectfluor (1-chloromethyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bistetrafluoroborate) and subsequent aromatization by dehydrofluorination. This methodology provides
由相应的2-芳基-5-(溴甲基)-1有效地制得5-烷氧基甲基-2-芳基-3-氟-1 H-吡咯和2-芳基-3-氟-1 H-吡咯-5-甲醛使用Selectfluor(1-氯甲基-4-氟-1,4-二氮杂双环[2.2.2]辛烷双四氟硼酸酯)通过亚氨基键的亲电α,α-二氟化生成吡咯啉,随后通过脱氟化氢进行芳构化。这种方法为各种新型的3-氟化吡咯提供了一种新的简便方法。