presents a new greener alternative for biocondensation of aldehydes and indoles
for the synthesis of bis- and tris(indolyl)methanes catalyzed by lemon juice (Citrus limon) in good yields under
ultrasound irradiation in aqueous ethanol. Various substituted aldehydes with
indoles under this reaction condition are elucidated. Also, tetraindolyl
compounds were prepared using terephthaldialdehyde by following the same
protocol. This method is an environmentally benign, efficient reaction, which requires shorter reaction time
and simple experimental and work-up procedures.
Cite this paper
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