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[摘要]:A new series of unsubstituted and substituted pyridinium salts bearing a 4-oxothiazolidinyl moiety was prepd. by an efficient rearrangement of 2-(1-bromoalkylidene)thiazolidin-4-ones. The process is based on three steps, namely carbon-bromine cleavage, bromine transfer, and substitution, each induced by pyridine or its derivs., acting as base and reactant. |
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