Novel synthetic strategy develops 1,4-dihydroquinolines using aminobenzylphosphonium salts, suggesting efficient preparation methods.
A novel synthetic strategy for the preparation of 1,4‐dihydroquinolines has been developed through [4 + 2] annulation of aminobenzylphosphonium salts (ABPS) with ethyl benzoylacetate derivatives. This protocol features mild reaction conditions, readily available starting materials, broad substrate scope, and good to excellent yields.
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Zhong et al. (2026) studied this question.
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