反应详情

A round-bottom flask was charged with 1-(2-(1-(tert-butyldimethylsilyloxy)-2-methylpropan-2-yloxy)-5-nitrophenyl)-4-methyl-1H-tetrazol-5(4H)-one (2.54 g, 6.00 mmol), EtOH (60 mL), and 10% Pd/C (50% in water, Degussa type E101; 510 mg, 20 wt % by weight of the starting nitro compound). The flask was sealed with a rubber septum, degassed, and back-filled with H2 (3×) from a balloon filled with H2. The reaction was stirred for 4 h using a H2 filled balloon. The reaction mixture was filtered through a pad of celite, and the pad of celite was rinsed with EtOAc/MeOH. The filtrate was evaporated to dryness to provide 1-(5-amino-2-(1-(tert-butyldimethylsilyloxy)-2-methylpropan-2-yloxy)phenyl)-4-methyl-1H-tetrazol-5(4H)-one (2.26 g, 96%) as a light brown solid that was used without further purification.

1. customThe flask was sealed with a rubber septum
2. customdegassed
3. additionback-filled with H2 (3×) from a balloon
4. additionfilled with H2
5. filtrationThe reaction mixture was filtered through a pad of celite
6. washthe pad of celite was rinsed with EtOAc/MeOH
7. customThe filtrate was evaporated to dryness