Some 6,7‐dimethoxy‐1‐halobenzyl‐1,2,3,4‐tetrahydroisoquinolines were synthesized from 2‐(3,4‐dimethoxyphenyl)ethylamine and halophenylacetic acids in three steps in good yield.

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Oxadiazole derivatives Oxadiazole derivatives R 0290Facile Synthesis of Symmetric and Unsymmetric 1,3,4-Oxadiazoles Using 2-Acyl(or aroyl)pyridazin-3-ones. -The use of BF 3 ·OEt 2 instead of PPA also allows the preparation of symmetrical products (II). However, the yields are decreased and a longer reaction time is required. -(PARK

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