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Chemoselective synthesis of bis(indolyl)methanes using sulfonic acid-functionalized chitosan

Amit Kumar, Chetananda Patel, Pooja Patil, Shivam Vyas, and Abha Sharma

National Institute of Pharmaceutical Education and Research, Raebareli, India

 

E-mail: abha.sharma@niperraebareli.edu.in

Abstract: Herein, we describe the electrophilic substitution reaction of indole with aldehydes and ketone using sulphonic acid functional group containing chitosan for the synthesis of bis(indolyl)methanes. The reaction is chemoselective affording a product from aldehydes and indole. The catalyst can be reused up to three times without great loss in yields. Hence, chitosan–SO3H (CTSA) proved to be a heterogeneous, efficient, chemoselective, and reusable catalyst for the synthesis of bis(indolyl)methane derivatives.

Keywords: Bis(indolyl)methanes ; Chemoselective ; CTSA ; Recyclable 

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-019-00846-2

 

Chemical Papers 73 (12) 3095–3104 (2019)

Tuesday, May 28, 2024

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