Willem Van Brabandt et al.
The Journal of organic chemistry, 71(18), 7100-7102 (2006-08-26)
N-(Alkylidene or 1-arylmethylidene)-2-propenylamines were regiospecifically functionalized to novel N-(alkylidene or 1-arylmethylidene)-3-bromo-2-fluoropropylamines, which were proven to be excellent precursors for 3-fluoroazetidines.