反应 #11282

反应方程式

2-(2,5-dibromophenyl)-5-[4-(octyloxy)phenyl]-1,3,4-oxadiazole

2-(2,5-Dibromophenyl)-5-[4-(octyloxy)phenyl]1,3,4-oxadiazole

3,5-dibromobenzoyl chloride

→

3,5-dibromo-N′-[4-(octyloxy)benzoyl]benzohydrazide

收率 36.0%

反应条件

实验过程

By the general method for the synthesis of 2-(2,5-dibromophenyl)-5-[4-(octyloxy)phenyl]-1,3,4-oxadiazole (1) in Example 3, the reaction of 3,5-dibromobenzoyl chloride (20.13 g, 0.06747 mole) with 4-octoxybenzoyl hydrazide (17 g, 0.06747 mole) gave the intermediate 3,5-dibromo-N′-[4-(octyloxy)benzoyl]benzohydrazide (12.87 g, 36% yield). Cyclocondensation of the intermediate 3,5-dibromo-N′-[4-(octyloxy)benzoyl]-benzohydrazide (12.17 g) with POCl3 (63 mL) gave the required 2-(3,5-dibromophenyl)-5-[4-(octyloxy)phenyl]-1,3,4-oxadiazole (5) (6.12 g, 52% yield).

来源