2-n-Butyl-4-chloro-5-methoxymethyl-1-(4-nitrobenzyl)imidazole → 1-(4-Aminobenzyl)-2-n-butyl-4-chloro-5-(methoxymethyl)imidazole

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To a solution of 2-n-butyl-4-chloro-5-methoxymethyl-1-(4-nitrobenzyl)imidazole (11.22 g) in methanol (100 mL) under N2 was carefully added 1.0 g of 10% palladium on charcoal. Hydrogen gas was then bubbled through the solution for 4 hours. The solution was filtered through Celite® and the solvent removed in vacuo to yield 9.23 g of an amber oil. NMR (200 MHz, CDCl3) δ 7.99 (s, 1H); 6.78 (d of d, 4H, J=5,5 Hz); 5.05 (s, 2H); 4.24 (s, 2H); 3.27 (s, 3H); 2.59 (t, 2H, J=7 Hz); 1.62 (t of t, 2H, J=7,7 Hz); 1.32 (t of q, 2H, J=7,7 Hz); 0.84 (t, 3H,J=7 Hz). Mass Calcd. for C16H23ClN3O; 307.1451. Found: 307.1460.

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