Abstract
AbstractMethylpyrimidines were treated with phosphorus pentachloride in phosphorus oxychloride to give trichloromethylpyrimidines, which reacted with two equivalent amounts of triphenylphosphine to yield chloropyrimidinylmethylenetriphenylphosphoranes as stable ylides in one step. These phosphorus ylides were subjected to the Wittig reaction with a variety of aldehydes to afford chloropyrimidinylolefins.
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