... at preparing a 5-( 1,2,4-oxadiazolyl) analogue of 1. This approach was based on recent chemistry developed by ... 15 - BrCH2C-CN=CHN(CH3)2 - BrCHzC<\ J - IN C2H50 I CZH5O 17 18 ... is of use as a building block for the preparation of a diverse array of organic molecules, such ...