A sustainable one-pot multi-component approach toward the synthesis of symmetric and unsymmetrical spiro heterocycles catalyzed by the Brønsted acidic ionic liquid [CMMIM][BF(4)]

一种可持续的一锅多组分方法，用于合成对称和不对称螺环杂环化合物，以布朗斯台德酸性离子液体[CMMIM][BF(4)]为催化剂。