SO3H-Carbon derived from glycerol: An efficient and recyclable catalyst for smooth and regioselective azidolysis of oxiranes in water

Abstract

KEYWORDSA series of β-hydroxyazides were effectively synthesized from the regioselective ring opening of oxiranes by azide anion in presence of glycerol-based sulfonic acid functionalized carbon as a novel reusable heterogeneous catalyst in H2O achieving good yields (80-98%). The workup procedure was simple, and the catalyst could be reused over five times without losing its catalytic activity and selectivity.Water Oxiranes Azidolysis Sodium azide Azidohydrins Carbon acid catalyst

Glycerol-based SO3H-Carbon Catalyst: A green recyclable catalyst for the chemoselective synthesis of pentaerythritol diacetals

“…We have reported a sustainable method for the preparation of -SO3H functionalized carbon-based solid acid catalyst having 1.6 mmol/g acid density with surface area of 0.21 m 2 /g from bioglycerol (biodiesel by-product) and also from the glycerolpitch (waste from fat splitting industry) by the in situ partial carbonization in a single step [22,23]. This catalyst exhibited excellent catalytic properties by demonstrating its effectiveness for various transformations [24][25][26][27][28][29][30] due to its high thermal stability, reusability and strong acid sites of sulfonic acid functional groups.…”