Fig. 5: Preparative-scale reaction and product elaboration.
From: Copper-catalyzed intermolecular formal (5 + 1) annulation of 1,5-diynes with 1,2,5-oxadiazoles
a Preparative-scale reaction of 1a. b Transformation of 3a into 4a and 5a.
Fig. 5: Preparative-scale reaction and product elaboration. | Communications Chemistry
