In heterogeneous catalysis, the catalyst is in a different phase from the reactants. 144690-92-6, At least one of the reactants interacts with the solid surface in a physical process called adsorption in such a way. 144690-92-6, name is C48H44N6O6. In an article£¬Which mentioned a new discovery about 144690-92-6
A 250 round bottom flask was charged with MTT (10 g), acetone/water (2/2 vol.), and 3 eq of H2SO4. The combination was stirred at room temperature for about 4-6 hrs. Triphenyl carbinol (TPC) was precipitated by adding water and filtered out. NaHC03 was added to the filtrate, and the mixture was cooled to 5C and stirred for 1 hr. Crude olmesartan medoxomil was obtained as white crystals (90% yield).Example 2: Preparation of crude olmesartan medoxomil AIL reactor, equipped with mechanical stirrer and thermometer, was charged with MTT (70 g), acetone (140 ml), water (140 ml), and H2S04 (19.47 g). The reactor was heated to 40C for 2.5 hrs (at EOR, MTT is LT 1%). Water (140 ml) was added at 40C, and the reaction was stirred for 1.5 hrs or until MTT is LT 0.1%. After cooling to 15C and stirring for 1 hr, the TPC was filtered and washed with water (70 ml).NaHC03 was added in portions to the filtrate at room temperature. The reaction mixture was stirred for 1 hr, then filtrated, and the cake was washed with water (140 ml). The solid was dried at 45C in a vacuum oven overnight to obtain crude OLM-Mod (98 % yield).
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Reference£º
Patent; TEVA PHARMACEUTICAL INDUSTRIES LTD.; TEVA PHARMACEUTICALS USA, INC.; WO2006/29056; (2006); A1;,
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