| 摘要 |
The present invention provides a method for preparing an antiulcer agent, 2-(2-pyridylmethylsulphinyl)benzimidazoles, such as Omeprazole, Lansoprazole and Pantoprazole, which includes oxidizing an intermediate having a linkage of methylthio group (-CH<SUB>2</SUB>S-) to methylsulfinyl (-CH<SUB>2</SUB>S(O)-) in the presence of an oxidation catalyst of acetyl acetonate of molybdenium (II) [(CH<SUB>3</SUB>C(O)CH<SUB>2</SUB>C(O)CH<SUB>2</SUB>)<SUB>2</SUB>Mo].
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