ChemInform Abstract: Phase Transfer Cata
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M. A. HASSAN; D. DOEPP
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Article
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2010
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John Wiley and Sons
⚖ 32 KB
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Phase Transfer Catalyzed C-vs O-Alkylation of 3-Methyl-1-phenyl-2-pyrazolin-5-one in the Absence or Presence of Carbon Disulfide. -Title compound (I) is treated with different bromoorganic compounds as alkylating agents. Alkylation of pyrazolone (I) by bromoacetaldehyde diethylacetal fails because