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近年来碳负离子在一些反应,如互变异构、重排反应、取代反应、加成反应等中的应用得到了发展。因此可用来合成天然产物、药物、农药及其他复杂的化合物。碳负离子表示反应物在一定的碳原子上带有负性电荷,而此负性电荷的强弱及其稳定性与该化合物的结构和取代基有直接关系。有机膦化合物中的α-碳负离子的p轨道能与磷原子空的d轨道发生交盖,使此碳负离子的稳定性增加。本文着重介
In recent years, carbanions have been developed in some reactions such as tautomerism, rearrangement reaction, substitution reaction, addition reaction and so on. It can be used to synthesize natural products, pharmaceuticals, pesticides and other complex compounds. Carbanions indicate that the reactant carries a negative charge on a certain carbon atom. The strength and stability of the negative charge is directly related to the structure and substituents of the compound. The p-orbital of the α-carbanion in the organic phosphine compound can cross the vacant d-orbit of the phosphorus atom to increase the stability of the carbanion. This article focuses on