Synthesis and structure of an air-stable organoantimony complex and its use as a catalyst for direct diastereoselective Mannich reactions in water

An air-stable organoantimony complex with a 5,6,7,12-tetrahydrodibenzo[c,f][1,5]azastibocine framework was synthesized, characterized, and found to exhibit high catalytic efficiency towards one-pot Mannich reaction with high diastereoselectivity in water. The catalyst can be recycled 10 times without showing any appreciable loss of efficiency. This catalytic system affords a simple and efficient approach for the synthesis of β-amino ketones.

Graphical abstractAn air-stable organoantimony complex with a 5,6,7,12-tetrahydrodibenzo[c,f][1,5]azastibocine framework was synthesized and characterized, and found to exhibit high catalytic efficiency in direct diastereoselective Mannich reaction in water, showing high yield as well as good selectivity, stability, recyclability and reusability.Figure optionsDownload full-size imageDownload as PowerPoint slide