n-Dodecylbenzene Sulfonic Acid (DBSA) as a Novel Brønsted Acid Catalyst for the Synthesis of Bis(indolyl)methanes and Bis(4-hydroxycoumarin-3-yl)methanes in Water

• 作者: Atul Chaskar Balu Pawar Vinod Shinde
• 来源期刊: 绿色与可持续化学(英文)
• 学科: 化学
• 关键词: n-Dodecylbenzene Sulfonic Acid (DBSA) Indole Aldehyde Bis(indolyl)methane Bis(4-hydroxycoumarin-3-yl)methanes
• 年，卷（期）: 2013,（2）
• 页码范围: 56-60
• 页数: 5页
• 分类号: O6

摘要

n-Dodecylbenzene sulfonic acid (DBSA) as a novel, biodegradable, and efficient Br?nsted acid catalyst used for the reaction of indoles/4-hydroxy coumarin with aldehydes to obtain a bis(indolyl)methanes/bis(4-hydroxycoumarin-3-yl)methanes, respectively. The catalyst exhibited remarkable activity, and tolerated a wide variety of functional groups providing the desired bis(indolyl)methanes and bis(4-hydroxycoumarin-3-yl)methanes in good to excellent yield (70%-96%) in water.