在当前的工作中,我们开发了一种有效的方案,用于通过Mannich型反应以高收率合成β-氨基羰基化合物和合成苄基氨基香豆素衍生物。Fe 3 O 4 @ZrO 2 / SO 4 2‐将其用作曼尼希反应的有效多相纳米催化剂。本研究分为两个部分。在第一部分中,在无溶剂条件下合成了β-氨基羰基衍生物。在另一部分中,在室温下合成苄氨基香豆素化合物。本方法具有许多优点,例如反应时间短,成本低,易于后处理,反应条件温和,收率高,催化剂的回收率和可重复使用性好,而活性没有明显损失。
An efficient non-ionic surfactant catalyzed multicomponent synthesis of novel benzylamino coumarin derivative via Mannich type reaction in aqueous media
作者:Atul Kumar、Maneesh Kumar Gupta、Mukesh Kumar
DOI:10.1016/j.tetlet.2011.06.040
日期:2011.8
An efficient non-ionic surfactant catalyzed multicomponent synthesis of novel benzylamino coumarin derivatives has been developed from secondary amines, aromatic aldehyde, and 4-hydroxy coumarin via Mannich type reaction in aqueousmedia. In this Mannich type reaction, surfactant forms stable colloidal medium to stabilize iminium ion which undergoes nucleophilic addition of 4-hydroxy coumarin to give
Fe
<sub>3</sub>
O
<sub>4</sub>
@ZrO
<sub>2</sub>
/SO
<sub>4</sub>
<sup>2‐</sup>
: A recyclable magnetic heterogeneous nanocatalyst for synthesis of β‐amino carbonyl derivatives and synthesis of benzylamino coumarin derivatives through Mannich reaction
developed an effective protocol for the synthesis of β‐amino carbonyl compounds and synthesis of benzylamino coumarin derivativesthrough Mannich type reaction in high yields. Fe3O4@ZrO2/SO42‐ was employed as an effective heterogeneous nanocatalyst for the Mannich reaction. This research consists of two sections. In first section, β‐amino carbonyl derivatives were synthesized under solvent‐free condition
在当前的工作中,我们开发了一种有效的方案,用于通过Mannich型反应以高收率合成β-氨基羰基化合物和合成苄基氨基香豆素衍生物。Fe 3 O 4 @ZrO 2 / SO 4 2‐将其用作曼尼希反应的有效多相纳米催化剂。本研究分为两个部分。在第一部分中,在无溶剂条件下合成了β-氨基羰基衍生物。在另一部分中,在室温下合成苄氨基香豆素化合物。本方法具有许多优点,例如反应时间短,成本低,易于后处理,反应条件温和,收率高,催化剂的回收率和可重复使用性好,而活性没有明显损失。