| 摘要 |
Improved method for: (I) where R = Hal; R1 = Hal or alkyl; n = 1, 2, or 3; m = 0, 1, or 2; p = 0, 1, 2, 3, or 4; m + n is not > 3. Fungicides and anthelminthics (q.v. SA. 65/3584) 2-Furyl-21-benzimidazole (36.8 g.) in AcOH (250 ml.) contng. c. H2SO4 (10 ml.) was treated at 120 deg. with Cl2 (16 g.), cooled to 80 deg., poured into H2O (500 ml.), basified (NH4OH), and filtered, giving the 2-(51-chlorofuryl-21)-benzimidazole (27.5 g.). |
