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An environmentally benign and efficient process for the preparation of β-hydroxyl ketones was developed by the practical cross-aldol reactions of 2-acetylpyridine, acetophenone, and cyclohexanone with 4-nitro-, 3-nitro-, and 2-nitrobenzaldehydes in water catalyzed by Na 2 CO 3 in very high yields.
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Wang et al. (2003) studied this question.
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