S. Kobayashi, M. Araki and M. Yasuda, “One-Pot Synthesis of β-Amino Esters from Aldehydes Using Lanthanide Triflate as a Catalyst,” Tetrahedron Letters, Vol. 36, No. 32, 1995, pp. 5773-5776.

has been cited by the following article:

• TITLE: 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

  AUTHORS: Balu Pawar, Vinod Shinde, Atul Chaskar

  KEYWORDS: n-Dodecylbenzene Sulfonic Acid (DBSA); Indole; Aldehyde; Bis(indolyl)methane; Bis(4-hydroxycoumarin-3-yl)methanes

  JOURNAL NAME: Green and Sustainable Chemistry, Vol.3 No.2, May 27, 2013

  ABSTRACT: 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.