Jashari, Ahmed; Hey-Hawkins, Evamarie; Mikhova, Bozhana; Draeger, Gerald; Popovski, Emil
(Basel : MDPI AG, 2007)
An improved synthetic method affording 4-chlorocoumarin-3-sulfonyl chloride (4) in very good yield (ca. 85 %) is reported. This compound was reacted with various bidentate nucleophiles such as 2-aminopyridines and ...