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Letters in Organic Chemistry

Editor-in-Chief

ISSN (Print): 1570-1786
ISSN (Online): 1875-6255

Synthesis of bis(indolyl)methanes Catalyzed by Triethylborane

Author(s): J. Pablo Garcia Merinos, Heraclio Lopez Ruiz, Yliana Lopez and Susana Rojas

Volume 12, Issue 5, 2015

Page: [332 - 336] Pages: 5

DOI: 10.2174/1570178612666150220225335

Abstract

Triethylborane (TEB) was found to be a mild, efficient, and acid catalyst in electrophilic substitution reaction of indoles with aldehydes compounds to afford the corresponding bis(indolyl)methanes. Vibrindole A (5) and bis(indolyl)methanes derivatives 16 and 18 were synthesized using this methodology. Compound 16 is an intermediary in the synthesis of the natural bisindoles arsindoline B (2) and streptindole (6). The structure of vibrindole A (5) was unequivocally confirmed by a single crystal X-ray diffraction analysis.

Keywords: Arsindoline B, bis(indolyl)methanes, indole, streptindole, triethylborane.


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