Online article for Non-subscribers

Pay per view

Heterocycles has a pay-per-view service for Non-subscribers.
You will be able to directly purchase the full text article through PayPal.
Your purchased Paper can be downloaded after the payment is completed.
An e-mail will be sent the URL to download the paper.
If you have any questions, please contact:

Price: ¥ 4,400 (Yen only)
Period: This Article can be accessed for 7 days.

Paper | Regular issue | Vol 68, No. 8, 2006, pp.1659-1668
Published online, 27th June, 2006
DOI: 10.3987/COM-06-10783
Phosphoric Acid-on-Silica Gel: A Green Catalyst for the Synthesis of Symmetrical Bis(indolyl)alkanes

Manas Chakrabarty,* Ratna Mukherjee, Ajanta Mukherji, Shiho Arima, and Yoshihiro Harigaya

*Department of Chemistry, Bose Institute, 93/1, A. P. C. Road, Kolkata-700009, India


Orthophosphoric acid, adsorbed on TLC-grade silica gel, has been demonstrated to be an efficient green catalyst for an expeditious and solvent-free one-step synthesis of symmetrical bis(indolyl)alkanes from the reaction of indoles with aryl aldehydes at 60-70 °C.